HVAC Sales Master

Fault Code Lookup

HVAC Sales Master
ERR159.02
Unit Bus fault / HHC COMM
This code typically points to
  • Wire harness between HHC and distribution board
  • HHC communication error
Next checks to confirm
  1. Inspect harness between HHC and distribution board
  2. Verify HHC communications
Escalation
User Display
Reset behavior
Clears when HHC communication restored.
Service Soon
Schedule repair
Source
Trane Hyperion *AM8/TAM8 Field Reference Data, p.22
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