A13
Hoval
Gas valve control failure
Furnace display shows gas valve fault, burner does not start
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Defective gas valve coil on Hoval gas train, Loose wiring to gas valve, No supply voltage from control board, Gas valve stuck closed due to contamination
How to Fix / Troubleshooting
Safety: Shut off gas and power. Only qualified gas technicians should work on gas valves.
- Visual inspection: Check the gas valve body and wiring harness for damage or signs of overheating.
- Check connectors: Ensure all plug-in connectors to the gas valve are firmly seated and not corroded.
- Verify gas cock: Confirm that the manual gas shut-off upstream of the Hoval furnace is open.
- Reset controller: Restore power and attempt a reset. If the error remains or the valve does not click during start-up, the valve or control board likely requires professional replacement.
Do not attempt to dismantle or manually force the gas valve; this is a critical safety component.
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Repair Difficulty
Professional Required
5/5
Required Part
Gas Valve Assembly
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