Alarms
Alarms will shut down the unit, require intervention (fix problem and clear alarm).
|
ALARM Code |
Description |
Potential Cause |
Action |
|---|---|---|---|
|
ALARM 10 |
Fan overcurrent |
Bad fan |
Replace fan. |
|
ALARM 11 |
Fan non-functional |
The fan is not operating. |
Validate the integrity of wiring between the board and the fan. Unplug fan harness and measure output voltage from board. It should read 102V - 132V. If voltage is good, replace fan. |
|
ALARM 12 |
Compressor overcurrent |
Bad compressor |
Replace dehumidifier |
|
ALARM 13 |
Compressor non-functional |
The compressor is not operating |
Validate the integrity of wiring between the board and the compressor. Unplug compressor harness and measure output voltage from board. It should read 102V - 132V. Replace compressor. Replace the dehumnidifier |
|
ALARM 20 |
TH-in sensor communication failure |
Inlet temperature and humidity sensor was disconnected from main PCB. |
Verify connection between sensor and main PCB. Replace inlet temp/RH sensor board. |
|
ALARM 21 |
TH-out sensor communication failure |
Outlet temperature and humidity sensor was disconnected from main PCB. |
Verify connection between sensor and main PCB. Replace outlet temp/RH sensor board. |
|
ALARM 22 |
Diff press sensor communication failure |
Differential pressure sensor was disconnected from main PCB. |
Verify connection between differential pressure sensor and main PCB. Replace differential pressure sensor board. |
|
ALARM 23 |
Power measurement IC communication failure |
Main PCB is receiving improper voltage. |
Verify main PCB is receiving proper voltage. Replace main PCB |
|
ALARM 24 |
RTC IC communication failure |
Bad main PCB |
Replace main PCB. |
|
ALARM 50 |
Low refrigerant charge |
There is an insufficient charge of R32 refrigerant in the dehumidifier. |
Charge the dehumidifier per the instructions in this document. |
|
ALARM 60 |
Inlet temp/RH sensor failure |
Bad intlet temp/RH sensor board. |
Replace inlet temp/RH sensor board. |
|
ALARM 61 |
Outlet temp/RH sensor failure |
Bad outlet temp/RH sensor board. |
Replace oulet temp/RH sensor board. |
|
ALARM 62 |
Air pressure sensor failure |
Bad air pressure sensing system. |
Check hoses. If the hoses are in tact, replace sensor board. |
|
ALARM 63 |
Defrost temperature sensor failure |
Bad defrost temperature sensor. |
Replace defrost temperature sensor. |
|
ALARM 64 |
Discharge temperature sensor failure |
Bad compressor discharge temperature sensor. |
Replace compressor discharge temperature sensor. |
|
ALARM 65 |
Defrost sensor out of range |
Defrost sensor measured a value outside of the expected range. |
Verify connection between sensor and main PCB. Replace defrost sensor. |
|
ALARM 66 |
Discharge temperature sensor out of range |
Discharge temperature sensor measured a value outside of the expected range. |
Verify connection between sensor and main PCB. Replace compressor discharge temperature sensor. |
|
ALARM 67 |
Model detection failure |
Bad model detection system. |
Call Resideo tech support. |