Amana AMVC960803BN Error Code E13: Redundant Relay Stuck Closed
What Does Code E13 Mean?
Error code E13 on the Amana AMVC960803BN indicates that the redundant gas valve relay on the integrated control module is stuck in the closed (energized) position when it should be open. This is a critical safety fault because the redundant relay is part of the gas valve shutoff circuit — if it cannot open, the furnace loses an important layer of protection against uncontrolled gas flow.
The control module continuously monitors the state of both the primary and redundant gas valve relays. When the redundant relay cannot open — typically because the relay contacts have welded together from overcurrent, heat, or age — the control module detects the discrepancy and shuts down to prevent unsafe operation. The furnace will not operate in this state.
Because the stuck relay may allow the gas valve circuit to remain energized even when the furnace is commanded off, this condition warrants turning off the gas supply at the shutoff valve. The integrated control module must be replaced by a qualified HVAC technician. Do not attempt to reset or operate the furnace until after professional service has been completed.
Common Causes
| Cause | Likelihood | DIY? |
|---|---|---|
| Redundant gas valve relay welded/stuck closed on control board | Most common | ✗ Call a pro → |
When to Call a Professional
Contact a licensed HVAC technician if:
- E13 is present — turn off the gas supply valve and call a technician immediately; do not attempt to reset or operate the furnace
- Control board replacement is required to replace the stuck relay — this must be performed by a qualified HVAC technician
Sources
✓ Verified against manufacturer service manual — March 2026