Norcold RV refrigerator fault codes: no FL, oP LI, E3 and more
Reviewed 7 primary sourcesSee sources
The same Norcold code can appear on several models, and each manual gives its own steps. Find your model on the refrigerator’s label, then use the rows that name it. Each row cites that model’s owner’s manual. Codes printed in either order, such as oP LI and LI oP, are listed together.
Norcold · RV refrigerators (gas absorption and 12-volt DC) · Seven owner’s manuals. Models: N61X, N81X, N62X, N62XXX, N82X, N82XXX, N64X, N64XXX, N64XIM, N64XIMXX, N84X, N84XXX, N84XIM, N84XIMXX, N10LX, NA10LX, 121X, 2118X, N41X, N51X, N15DCX, N20DCX.
How to read the code
- N61X, N81X: ON and GAS indicator lights (no alphanumeric display).[1]
- N62X, N82X, N64X, N84X: one-character display on N62X/N82X models, two-character display with an audible alarm on N64X/N84X models.[2]
- N10LX, NA10LX: two-character display, audible alarm.[3]
- 121X: two-character display, audible alarm.[4]
- 2118X: two-character display, audible alarm.[5]
- N41X, N51X: single-character display.[6]
- N15DCX, N20DCX: display blinks E-code.[7]
Codes: Display codes
| Code | Models | Meaning | What to do | Who fixes it |
|---|---|---|---|---|
| A | N62X, N82X | No AC voltage at control panel. | Check that the refrigerator is plugged into a working outlet, the RV’s fuse or breaker is intact and the generator is running, if you use one. If that doesn’t clear it, see a dealer or authorized Norcold service center.[2] | Check, then service if it persists |
| A | N41X, N51X | No AC voltage to refrigerator control. | Check that the refrigerator is plugged into a working outlet, the RV’s fuse or breaker is intact and the generator is running, if you use one. If that doesn’t clear it, see a dealer or authorized Norcold service center.[6] | Check, then service if it persists |
| AC HE | N64X, N84X | Fault within refrigerator controls. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[2] | Technician |
| AC HE | N10LX, NA10LX | Problem relating to the AC heater. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[3] | Technician |
| AC HE | 121X | Fault within refrigerator controls. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[4] | Technician |
| AC HE | 2118X | Problem related to the AC heater. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[5] | Technician |
| no AC | N64X, N84X | No AC voltage at control panel. | Check that the refrigerator is plugged into a working outlet, the RV’s fuse or breaker is intact and the generator is running, if you use one. If that doesn’t clear it, see a dealer or authorized Norcold service center.[2] | Check, then service if it persists |
| no AC | N10LX, NA10LX | AC voltage not available to refrigerator. | Turn the power off and back on to reset it. Check that the refrigerator is plugged into a working outlet, the RV’s fuse or breaker is intact and the generator is running, if you use one. If that doesn’t clear it, see a dealer or authorized Norcold service center.[3] | Check, then service if it persists |
| no AC | 121X | No AC voltage to refrigerator. | Check that the refrigerator is plugged into a working outlet, the RV’s fuse or breaker is intact and the generator is running, if you use one. If that doesn’t clear it, see a dealer or authorized Norcold service center.[4] | Check, then service if it persists |
| no AC | 2118X | AC voltage not available. | Check that the refrigerator is plugged into a working outlet, the RV’s fuse or breaker is intact and the generator is running, if you use one. If that doesn’t clear it, see a dealer or authorized Norcold service center.[5] | Check, then service if it persists |
| AC rE | N64X, N84X | Fault within refrigerator controls. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[2] | Technician |
| AC rE | N10LX, NA10LX | Fault within refrigerator controls. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[3] | Technician |
| AC rE | 121X | Fault within refrigerator controls. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[4] | Technician |
| AC rE | 2118X | Fault within refrigerator controls. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[5] | Technician |
| C | N62X, N82X | DC voltage to control panel too low. | Check that the RV’s battery charging equipment and AC/DC converter (if fitted) are working. If that doesn’t clear it, see a dealer or authorized Norcold service center.[2] | Check, then service if it persists |
| C | N41X, N51X | DC voltage to control panel too low. | Check that the RV’s battery charging equipment and AC/DC converter (if fitted) are working. If that doesn’t clear it, see a dealer or authorized Norcold service center.[6] | Check, then service if it persists |
| d | N62X, N82X | Door open more than 2 minutes. | Close the door.[2] | Owner check |
| dc HE | N64X, N84X | Fault within refrigerator controls. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[2] | Technician |
| HI dc | N10LX, NA10LX | DC input voltage too high. | Turn the power off and back on to reset it. Check that the RV’s battery charging equipment and AC/DC converter (if fitted) are working. If that doesn’t clear it, see a dealer or authorized Norcold service center.[3] | Check, then service if it persists |
| dc LO | N64X, N84X | DC voltage to control panel too low. | Check that the RV’s battery charging equipment and AC/DC converter (if fitted) are working. If that doesn’t clear it, see a dealer or authorized Norcold service center.[2] | Check, then service if it persists |
| Lo dc | N10LX, NA10LX | DC input voltage too low. | Check that the RV’s battery charging equipment and AC/DC converter (if fitted) are working. If that doesn’t clear it, see a dealer or authorized Norcold service center.[3] | Check, then service if it persists |
| dc LO | 121X | DC voltage to control panel too low. | Check that the RV’s battery charging equipment and AC/DC converter (if fitted) are working. If that doesn’t clear it, see a dealer or authorized Norcold service center.[4] | Check, then service if it persists |
| dc LO | 2118X | DC voltage to refrigerator is low. | Check that the RV’s battery charging equipment and AC/DC converter (if fitted) are working. If that doesn’t clear it, see a dealer or authorized Norcold service center.[5] | Check, then service if it persists |
| dc rE | N64X, N84X | Fault within refrigerator controls. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[2] | Technician |
| dr | N64X, N84X | Door open more than 2 minutes. | Close the door.[2] | Owner check |
| dr | 121X | Door open more than 2 minutes. | Close the door.[4] | Owner check |
| dr | 2118X | Door open more than 2 minutes. | Close the door.[5] | Owner check |
| no dt | N10LX, NA10LX | Loss of communication between refrigerator controls. | Turn the refrigerator off and back on to reset it. If the code comes back, see a dealer or authorized Norcold service center.[3] | Check, then service if it persists |
| F | N62X, N82X | Burner did not ignite or re-ignite. | Check that the LP tank valve is open, the gas pressure is correct, the refrigerator’s manual gas shutoff valve is open and there is no air in the propane line (the manual explains how to purge it). If that doesn’t clear it, see a dealer or authorized Norcold service center.[2] | Check, then service if it persists |
| F | N41X, N51X | Burner did not ignite or re-ignite. | Check that the LP tank valve is open, the gas pressure is correct, the refrigerator’s manual gas shutoff valve is open and there is no air in the propane line (the manual explains how to purge it).[6] | Check, then service if it persists |
| FL -- | N10LX, NA10LX | Flame sensed at burner when there should be none. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[3] | Technician |
| FL -- | 2118X | Flame present at burner when there should be none. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[5] | Technician |
| no FL | N64X, N84X | Burner did not ignite or re-ignite. | Check that the LP tank valve is open, the gas pressure is correct, the refrigerator’s manual gas shutoff valve is open and there is no air in the propane line (the manual explains how to purge it). If that doesn’t clear it, see a dealer or authorized Norcold service center.[2] | Check, then service if it persists |
| no FL | N10LX, NA10LX | Burner did not ignite or re-ignite. | Turn the power off and back on to reset it. Check that the LP tank valve is open, the gas pressure is correct, the refrigerator’s manual gas shutoff valve is open and there is no air in the propane line (the manual explains how to purge it). If that doesn’t clear it, see a dealer or authorized Norcold service center.[3] | Check, then service if it persists |
| no FL | 121X | Burner did not ignite or re-ignite. | Check that the LP tank valve is open, the gas pressure is correct, the refrigerator’s manual gas shutoff valve is open and there is no air in the propane line (the manual explains how to purge it). If that doesn’t clear it, see a dealer or authorized Norcold service center.[4] | Check, then service if it persists |
| no FL | 2118X | Burner did not ignite or re-ignite. | Check that the LP tank valve is open, the gas pressure is correct, the refrigerator’s manual gas shutoff valve is open and there is no air in the propane line (the manual explains how to purge it). If that doesn’t clear it, see a dealer or authorized Norcold service center.[5] | Check, then service if it persists |
| H | N62X, N82X | Fault within refrigerator controls. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[2] | Technician |
| H | N41X, N51X | Fault within refrigerator controls. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[6] | Technician |
| oP LI | N10LX, NA10LX | Fault within electronic controls (as worded in this manual). | Turn the refrigerator off and back on to reset it. If the code comes back, see a dealer or authorized Norcold service center.[3] | Check, then service if it persists |
| LI oP | 121X | High temperature limit switch is open. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[4] | Technician |
| oP LI | 2118X | A temperature limit switch is open. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[5] | Technician |
| n | N41X, N51X | Cooling unit has stopped cooling. | First time (before reset): check vents not blocked, doors closed, vehicle level. Second time (after reset): not owner-serviceable; see a dealer or authorized Norcold service center.[6] | Technician |
| r | N62X, N82X | Fault within refrigerator controls. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[2] | Technician |
| r | N41X, N51X | Fault within refrigerator controls. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[6] | Technician |
| S | N62X, N82X | Fault within refrigerator controls. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[2] | Technician |
| S | N41X, N51X | Fault within refrigerator controls. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[6] | Technician |
| Sr | N64X, N84X | Fault within refrigerator controls. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[2] | Technician |
| Sr | N10LX, NA10LX | Fault within electronic controls. | Turn the refrigerator off and back on to reset it. If the code comes back, see a dealer or authorized Norcold service center.[3] | Check, then service if it persists |
| Sr | 121X | Fault within refrigerator controls. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[4] | Technician |
| Sr | 2118X | Fault within refrigerator controls. | Turn the power off and back on to reset it. If the code comes back, see a dealer or authorized Norcold service center.[5] | Check, then service if it persists |
Codes: E-codes (12-volt N15DCX, N20DCX)
| Code | Models | Meaning | What to do | Who fixes it |
|---|---|---|---|---|
| E1 | N15DCX, N20DCX | Fresh food thermistor error. | The manual gives the meaning only. If its general checks don’t help, see a dealer or authorized Norcold service center.[7] | Check, then service if it persists |
| E2 | N15DCX, N20DCX | Freezer thermistor error. | The manual gives the meaning only. If its general checks don’t help, see a dealer or authorized Norcold service center.[7] | Check, then service if it persists |
| E3 | N15DCX, N20DCX | Low/high voltage cutout. | The manual gives the meaning only. If its general checks don’t help, see a dealer or authorized Norcold service center.[7] | Check, then service if it persists |
| E4 | N15DCX, N20DCX | Door open longer than 2 minutes. | The manual gives the meaning only. If its general checks don’t help, see a dealer or authorized Norcold service center.[7] | Check, then service if it persists |
| E5 | N15DCX, N20DCX | Voltage too low. | The manual gives the meaning only. If its general checks don’t help, see a dealer or authorized Norcold service center.[7] | Check, then service if it persists |
| E6 | N15DCX, N20DCX | Ambient thermistor error. | The manual gives the meaning only. If its general checks don’t help, see a dealer or authorized Norcold service center.[7] | Check, then service if it persists |
| E7 | N15DCX, N20DCX | Fresh food evaporator fan error. | The manual gives the meaning only. If its general checks don’t help, see a dealer or authorized Norcold service center.[7] | Check, then service if it persists |
| E8 | N15DCX, N20DCX | Freezer condenser fan failure (as worded). | The manual gives the meaning only. If its general checks don’t help, see a dealer or authorized Norcold service center.[7] | Check, then service if it persists |
| E9 | N15DCX, N20DCX | Fresh food condenser fan failure (as worded). | The manual gives the meaning only. If its general checks don’t help, see a dealer or authorized Norcold service center.[7] | Check, then service if it persists |
Codes: Indicator lights (N61X, N81X)
| Code | Models | Meaning | What to do | Who fixes it |
|---|---|---|---|---|
| ON+GAS flash 1/s | N61X, N81X | No energy source available: no AC (or Manual GAS mode) and burner did not ignite/re-ignite. | In AUTO check AC supply (outlet, breaker, generator); in any mode run the gas checks: Check that the LP tank valve is open, the gas pressure is correct, the refrigerator’s manual gas shutoff valve is open and there is no air in the propane line (the manual explains how to purge it). Reset by turning OFF then back to AUTO or GAS. If that doesn’t clear it, see a dealer or authorized Norcold service center.[1] | Check, then service if it persists |
| GAS flash 1/s | N61X, N81X | Burner did not ignite/re-ignite (gas lock-out); AC has returned and unit runs on AC. | Check that the LP tank valve is open, the gas pressure is correct, the refrigerator’s manual gas shutoff valve is open and there is no air in the propane line (the manual explains how to purge it). Reset by turning OFF then back to AUTO or GAS. If that doesn’t clear it, see a dealer or authorized Norcold service center.[1] | Check, then service if it persists |
| ON off-flash x1 | N61X, N81X | Temperature sensor failed; refrigerator runs on Back-Up Operating System. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[1] | Technician |
| ON off-flash x3 | N61X, N81X | AC heater failed; operates on propane only. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[1] | Technician |
| ON off-flash x4 | N61X, N81X | Fault within refrigerator operating controls. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[1] | Technician |
| ON light off | N61X, N81X | No DC voltage at control panel, or refrigerator is OFF. | Check that the refrigerator is on and that the battery charging equipment and AC/DC converter work. If that doesn’t clear it, see a dealer or authorized Norcold service center.[1] | Check, then service if it persists |
Codes: Blank or flashing display
| Code | Models | Meaning | What to do | Who fixes it |
|---|---|---|---|---|
| Blank display | N10LX, NA10LX | Refrigerator off or will not turn on. | Turn the power on, then check the battery charging equipment and AC/DC converter. If that doesn’t clear it, see a dealer or authorized Norcold service center.[3] | Check, then service if it persists |
| No display | N62X, N82X | No DC at control panel, or refrigerator OFF. | Check that the refrigerator is on and that the battery charging equipment and AC/DC converter work. If that doesn’t clear it, see a dealer or authorized Norcold service center.[2] | Check, then service if it persists |
| No display | N64X, N84X | No DC at control panel, or refrigerator OFF. | Check that the refrigerator is on and that the battery charging equipment and AC/DC converter work. If that doesn’t clear it, see a dealer or authorized Norcold service center.[2] | Check, then service if it persists |
| No display | 121X | No DC at control panel, or refrigerator OFF. | Check that the refrigerator is on and that the battery charging equipment and AC/DC converter work. If that doesn’t clear it, see a dealer or authorized Norcold service center.[4] | Check, then service if it persists |
| No display | N41X, N51X | No DC at control panel, or refrigerator OFF. | Check that the refrigerator is on and that the battery charging equipment and AC/DC converter work. If that doesn’t clear it, see a dealer or authorized Norcold service center.[6] | Check, then service if it persists |
| Temp number flashes | N62X, N82X | Operating on Back Up Operating System. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[2] | Technician |
| Temp number flashes | N64X, N84X | Operating on Back Up Operating System. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[2] | Technician |
| Temp number flashes | 121X | Operating on Back Up Operating System. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[4] | Technician |
| Temp setting flashes | N10LX, NA10LX | Thermistor sensed inoperable; Backup Operating System controls temperature. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[3] | Technician |
| Temp setting flashes | 2118X | Operating on Backup Operating System. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[5] | Technician |
| Temp setting flashes | N41X, N51X | Operating on Back Up Operating System. | Not owner-serviceable. Take it to a dealer or authorized Norcold service center.[6] | Technician |
When to call a technician
Codes marked as service items are not owner-serviceable. Norcold sends them to a dealer or authorized Norcold service center.[2] Our mobile RV repair listings cover Colorado Springs and the Boise area so far.
Sources
Facts on this page are restated from the manufacturer documents below. Codes differ by model and spec letter, so check the manual for your exact unit. We have not tested these codes on equipment.
- Owner's Manual - N61X / N81X 2-way RV refrigeratorsNorcold (Thetford) · 635485D · Safety instructions p. 3; fault codes p. 17 · retrieved
- Owner's Manual - N62X/N64X/N82X/N84X RV refrigeratorsNorcold (Thetford) · 635488C · Safety instructions p. 3; fault codes pp. 25–26 · retrieved
- Owner's Manual - Polar 10 Series N10LX and NA10LXNorcold (Thetford) · 639307D · Safety instructions; fault codes table · retrieved
- Owner's Manual for the 121X series of RV RefrigeratorsNorcold (Thetford) · 635494E · Safety instructions; fault codes table · retrieved
- Owner's Manual for the 2118X series of RV RefrigeratorsNorcold (Thetford) · 636900B · Safety instructions; fault codes table · retrieved
- Owner's Manual - N41X / N51X refrigeratorsNorcold (Thetford) · 635480E · Safety instructions; fault codes table · retrieved
- Owner's Manual - N15DCX / N20DCX DC electric refrigeratorsNorcold (Thetford) · 641013E · Safety instructions; fault codes table · retrieved
Primary publishers: Norcold (Thetford). Spotted an error? Email the address in the footer with the model and the document you are using.