Fault Code Lookup

HVAC Sales Master
7 flashes
Gas valve circuit error
This code typically points to
  • Gas valve output not operating as expected
  • Gas valve wiring issue
  • Failed gas valve

Next checks to confirm
  1. Verify gas valve wiring and connections
  2. Verify board output on valve call
  3. Test gas valve operation directly

Escalation
If wiring and output are correct and valve doesn't respond, valve replacement likely.
Reset behavior
NOT stored in memory on this platform.
Urgent
Fix now
Source
Emerson 50V64-743 diagnostic features