KeepRite Error Code 56: Air and coil sensors disagree (Heat Pump)
KeepRite error code 56 on a heat pump means: Air and coil sensors disagree. It is also called KeepRite diagnostic code 56.
Homeowner? What KeepRite code 56 means for you
Check, then call Your heat pump is reporting: Air and coil sensors disagree. This is often caused by something simple. Try the safe checks below; if the code returns, book a service call before it turns into a no-heat or no-hot-water emergency.
Safe things you can check yourself
- Check the thermostat: right mode (Heat or Cool), set a few degrees past room temperature, and fresh batteries if it uses them.
- Check both breakers and the outdoor disconnect box beside the outdoor unit; all should be ON.
- Look at the air filter. If it is grey and clogged, replace it; a blocked filter causes many shutdowns.
- In winter, keep snow and ice off and away from the outdoor unit. A short defrost cycle with steam is normal.
- Try one reset: turn the power off for 30 seconds, then back on. If the code comes back, stop resetting and call a technician.
Call (647) 657-2977Book a service call
Licensed technicians serving Vaughan, Toronto and the GTA.
What does KeepRite error code 56 mean?
The air and coil thermistor readings do not make sense together. Cooling: air sensor more than 10°F warmer or 20°F cooler than the coil sensor. Heat pump heating: more than 35°F warmer or 10°F cooler.
Applies to: KeepRite *SA5/*SA6 AC and *SH4/*SH5/*SH6 HP single-stage communicating; *CA7/*CA9 AC and *CH6/*CH9 HP two-stage communicating
Common causes of KeepRite code 56
- One sensor drifting or misplaced
- Sensor relocated from its factory spot
- Wiring fault
KeepRite models that use code 56
*CH624*CH636*CH648*CH660*CH924*CH936*CH948*CH960*SH4*SH5*SH6
Other KeepRite Heat Pump codes
All KeepRite Heat Pump error codes →
KeepRite code 56: homeowner questions
What does KeepRite code 56 mean?
Air and coil sensors disagree. The air and coil thermistor readings do not make sense together. Cooling: air sensor more than 10°F warmer or 20°F cooler than the coil sensor. Heat pump heating: more than 35°F warmer or 10°F cooler.
Is it safe to keep using my heat pump with code 56?
It depends on the cause. This is often caused by something simple. Try the safe checks below; if the code returns, book a service call before it turns into a no-heat or no-hot-water emergency.
Can I reset KeepRite code 56 myself?
You can try one reset (power off for 30 seconds, then on). If KeepRite code 56 comes back, the cause is still there and a licensed technician should check it.
Who can fix KeepRite code 56 near me?
Aurora Star Tech Inc. repairs KeepRite heat pumps in Vaughan, Toronto and across the GTA. Call (647) 657-2977 or book a service call online.
Homeowner help: AC Running But Not Cooling: What to Check · Heat Pump Not Heating or Blowing Cold Air
Troubleshooting guides
- Forcing a defrost to test the board - KeepRite N4H4/R4H4/WCH4/NXH5 KeepRite · Heat Pump
- Outdoor unit will not run or will not defrost - KeepRite heat pump defrost board (FAST 1173636/1177927/1190281) KeepRite · Heat Pump
Source: KeepRite/ICP C4A3/H4A3/T4A3/CXA6 Installation Instructions 421 01 5103 05, Table 1 Status Codes, p.17; KeepRite_ICP_KeepRite_Tempstar_Heil_split_A_C_HP_R_410A_R_22_service_421_08_5400_04.txt - section Table 13 Status Codes (single-stage); KeepRite_ICP_KeepRite_Tempstar_Heil_split_A_C_HP_R_410A_R_22_service_421_08_5400_04.txt - section Table 17 Troubleshooting (two-stage). Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.