Model reference
Lennox 93G35
Heat Pump
6 documents33 error codes5 service modes
Available documentation
Service Manual
- XP15 Series Service Literature21 pg
- HPXA12 Series Units - Service Literature23 pg
- XP14 Series Service Literature23 pg
- XP13 Series Service Literature16 pg
- XP16 Series Service Literature24 pg
- XPG20 Series Service Literature36 pg
MyPros+ Max
Diagnose your Lennox 93G35.
- Step-by-step diagnostics from the service manual
- Test values, resistance specs, and wiring references
- Verified part numbers when replacement is needed
Start diagnosing
$29/month · Cancel anytime · Or $9.95 3-day pass · Plus applicable tax
Error codes (33)
CodeMeaning
1Long Run Time2System Pressure Trip or Discharge Sensor Fault3Short Cycling4Locked Rotor5Open Circuit6Open Start Circuit7Open Run Circuit8Welded Contactor9Low VoltageAlternating FAST FlashCoil sensor problemAlternating SLOW Flash5-minute anti-short cycle delay (initial power up, safety trip, or end of room…DS2 OFF / DS1 OFFNo power (24V) to control terminals R & C or board failure.DS2 OFF / DS1 ONLow pressure lockoutDS2 OFF / DS1 SLOW FlashLow pressure faultDS2 ON / DS1 OFFHigh pressure lockoutDS2 ON / DS1 ONCircuit board failureDS2 SLOW Flash / DS1 OFFHigh pressure faultDS2:Alternating FAST Flash / DS1:Alternating FAST FlashCoil sensor problemDS2:Alternating SLOW Flash / DS1:Alternating SLOW Flash5-minute anti-short cycle delay due to initial power up, safety trip, or end of…DS2:FAST Flash / DS1:OFFDischarge sensor lockoutDS2:FAST Flash / DS1:ONDischarge line temperature lockoutDS2:OFF / DS1:FAST FlashDischarge sensor faultDS2:OFF / DS1:OFFNo power (24V) to board terminals R & C or board failure.DS2:OFF / DS1:ONLow pressure lockoutDS2:OFF / DS1:SLOW FlashLow pressure faultDS2:ON / DS1:OFFHigh pressure lockoutDS2:ON / DS1:ONCircuit board failureDS2:Simultaneous FAST Flash / DS1:Simultaneous FAST FlashAmbient sensor problemDS2:Simultaneous SLOW Flash / DS1:Simultaneous SLOW FlashNormal operationDS2:SLOW Flash / DS1:OFFHigh pressure faultService modes (5)
- 5-Strike Lockout Reset["Option 1
- Compressor 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 input is active (ON) and the O room thermostat terminal into board is inactive (heating…
- LSOM Installation Verification Test["Test 1 (Trip LED)
- Test Mode (Defrost Control)["Ensure Y1 is energized and 24V power is applied to the defrost control.","Ensure the O room…
Full entry steps, exit procedures, and test sequences are available in Max.
Related Lennox heat pump models
75,000+ service documents · 20,000+ error codes · 100+ brands
Get Started$29/month · Cancel anytime · Or $9.95 3-day pass · Plus applicable tax