Fault Code Lookup

HVAC Sales Master
10 red flashes
Gas valve circuit shorted
This code typically points to
  • Gas valve wiring short
  • Failed gas valve

Next checks to confirm
  1. Check gas-valve wiring first
  2. If wiring correct, replace gas valve per manual

Escalation
Safety concern until resolved.
Reset behavior
Clears when short is corrected.
Safety Critical
Immediate concern
Source
YP9C install manual