Model reference
Lennox HPXA16-060
Heat Pump
1 document13 error codes2 service modes
Available documentation
Service Manual
- HPXA16 Series23 pg
MyPros+ Max
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Error codes (13)
CodeMeaning
Alternating FAST Flash (Green/Red)Coil sensor problemAlternating SLOW Flash (Green/Red)5-minute anti-short cycle delay after initial power up, safety trip, or end of…Green FAST Flash / Red OFFDischarge sensor lockout (5 strikes)Green FAST Flash / Red ONDischarge line temperature lockout (5 strikes)Green OFF / Red FAST FlashDischarge sensor faultGreen OFF / Red SLOW FlashLow pressure faultGreen ON / Red OFFLow pressure lockout (5 strikes)Green ON / Red ONCircuit board failureGreen SLOW Flash / Red OFFHigh pressure faultGreen SLOW Flash / Red ONDischarge line temperature faultOFF/OFFNo power (24V) to board terminals R & C or board failure.Simultaneous FAST Flash (Green/Red)Ambient sensor problemSimultaneous SLOW Flash (Green/Red)Normal operationService modes (2)
- Compressor Two-Stage Modulation Operational Check["Turn main power OFF to outdoor unit.","Adjust room thermostat set point above (heating) or below…
- Defrost Board Test Mode["Ensure Y1 is energized (active) and the O line from the room thermostat into the board is…
Full entry steps, exit procedures, and test sequences are available in Max.
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