Yellow 6 flashes Open start circuit / lockout (older ComfortNet board)

What the control is telling you

Yellow LED 6 flashes. Red OFF = open start circuit; red ON = lockout after the fault was seen 4 times. Same as 06 / L6 on newer boards.

Applies to: Earlier ComfortNet condensers/heat pumps with the PCBHR101-103 or PBBGR101-102 outdoor control (green, yellow and red status LEDs) - ASXC/DSXC/ASZC/DSZC revisions before the PCBHR104 change

Likely causes

• Compressor start winding open
• Failed run capacitor or capacitor wiring
• Compressor not wired correctly to the control
• Faulty compressor wiring

Test and repair steps

1. Warning: Kill power to the outdoor unit before touching wiring, the compressor terminals or the control.
2. Check the run capacitor and its wiring; replace if weak or open.
3. Measure compressor winding resistance (C-S, C-R, R-S); an open start winding means compressor replacement.
4. Check compressor wiring and connections at the control and terminals.
5. Lockout (red ON) needs a 24 VAC power cycle to clear.

Models that show this code

24 models in Goodman/Amana ComfortNet ASZC/GSZC/DSZC

Other codes on the same units

• Yellow 2 flashes High side fault / high pressure trip / high pressure lockout (older ComfortNet board)
• Yellow 3 flashes Short cycling (older ComfortNet board)
• Yellow 4 flashes Locked rotor (older ComfortNet board)
• Yellow 5 flashes Open circuit (older ComfortNet board)
• Yellow 7 flashes Open run circuit / lockout (older ComfortNet board)
• Yellow 8 flashes Low or high line voltage (older ComfortNet board)
• Yellow 9 flashes Low 24 V control voltage (older ComfortNet board)
• Yellow ON + Red ON Compressor protector open (older ComfortNet board)