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Error code reference
Lennox Heat Pump Error Code 7
Compressor temperature exceeded its limit after running more than five minutes (or open sensor).
SourceLennox HP21 Series - Full Service Manual (Heat Pump)p. 15
Diagnostic procedure
The full 7 procedure
Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.
MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check compressor winding temperature sensors for open circuit.
SourceLennox HP21 Series - Full Service Manual (Heat Pump)p. 15
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Where this code is documented
4 manuals in the MyPros+ library document this code for Lennox heat pump.
Models covered by the manuals that document this code
- 10J42
- 31461
- 33A09
- 39H29
- 40K58
- 45F08
- 50A93
- 56A87
- 68M04
- 69J07
- 76F53
- 81J69
- 81M28
- 93G35
- HP21-36-230
- HP21-36-233
- HP21-411
- HP21-413
- HP21-48-230
- HP21-48-233
- HP21-511
- HP21-513
- HP21-60-230
- HP21-60-233
More models are covered than are listed here.
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