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Model reference

Goodman VSZ

Heat Pump

1 document29 error codes6 service modes

Available documentation

Service Manual

  • Service Instructions311 pg
    Covers this model
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Error codes (29)

CodeMeaning
01Low side fault02High side fault03Short cycling04Locked rotor05Open circuit06Open start circuit07Open run circuit08Low line voltage (less than 185 VAC) or high line voltage (greater than 255…09Low pilot voltageA2Outdoor air temperature sensor faultA3Outdoor coil temperature sensor faultb0Blower motor not running when it should be runningb1Blower motor communication error.b2Blower motor HP mismatch.b3Blower motor operating in power, temperature, or speed limit.b4Blower motor current trip or lost rotor.b5Blower motor rotor locked.b6Over/under voltage trip or over temperature trip.b7Incomplete parameter sent to motor.b9Low indoor airflowd0Data not yet on networkd1Invalid data on networkd2System mis-matchd3Configuration mis-matchd4Invalid memory card dataE5Open fuseEcHeater kit too large, too small, or no matchEEInternal fault / board misoperationEFAuxiliary switch open.

Service modes (6)

  • ComfortNet Advanced Features Menu["On CTK0* thermostat Home Screen, touch Menu key","Touch and hold Installer Config key for…
  • EBTDR Speedup Mode (Troubleshooting)["Short the SPEEDUP terminal to the common terminal (C) on the EBTDR board"]
  • Fault Recall (AVPTC/MBVC)["While in standby (no thermostat inputs), depress the fault recall switch for more than 2 seconds"]
  • Field Test Mode["Press TEST button on UC board"]
  • Forced Defrost (ComfortNet Models)["Set thermostat to call for heating","Press TEST and RECALL buttons simultaneously for…
  • Network Reset (ComfortNet)["Depress Learn button once quickly for a power-up reset","Depress and hold Learn button for 2…

Full entry steps, exit procedures, and test sequences are available in Max.

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