Payne PG8MAA Error Code No Previous Code: No Previous Code
What Does Code No Previous Code Mean?
Status code 11 on the Payne PG8MAA means "No Previous Code" — there are no faults recorded in the control board's memory. This is the default status code and indicates normal operation. It is not an error.
The PG8MAA control board stores the most recent fault code in memory so that a technician can diagnose intermittent problems after the fact. However, stored codes are automatically erased after 72 hours. They are also cleared whenever 115V or 24V power to the furnace is interrupted (for example, if the breaker was tripped or the power switch was turned off and back on).
If you were expecting to find a stored fault code but see code 11 instead, it likely means either more than 72 hours have passed since the last fault, or the furnace lost power at some point which cleared the stored code. To recall a stored status code without clearing it, you can briefly disconnect and reconnect one RED wire from the draft safeguard switch, or momentarily short the TEST/TWIN terminal to the Com24V terminal.
Common Causes
| Cause | Likelihood | DIY? |
|---|---|---|
| Normal operation with no faults recorded | Most common | — N/A |
When to Call a Professional
Contact a licensed HVAC technician if:
- Your furnace is not heating despite showing code 11 (the problem may be thermostat-related)
- You suspect a fault occurred but the code was cleared by a power interruption
- The furnace cycles on and off frequently but never stores a fault code