GVC
Raypak
Gas Valve Circuit Error
Display shows 'GVC' and heater will not fire; may indicate gas valve circuit fault.
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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
Open or shorted gas valve coil, Loose gas valve wiring harness, Faulty ignition control board, Incorrect gas valve replacement
How to Fix / Troubleshooting
Safety first: Turn off power and gas. Work on gas valves should be performed by licensed technicians.
Steps to address GVC error:
- Inspect wiring: Check the multi‑pin connector or individual leads from the ignition/control board to the gas valve. Ensure they are fully seated and not corroded.
- Check for damage: Look for melted insulation or signs of shorting around the gas valve and harness.
- Measure coil resistance: With power OFF and wires disconnected, measure resistance across the gas valve coil terminals. Compare to Raypak specifications. An open or very low resistance indicates a bad valve.
- Verify correct part: If the gas valve was recently replaced, confirm it is the correct Raypak‑approved model and wired correctly.
- Control board check: If the valve tests good, the ignition/control board may not be driving the valve correctly and may need replacement.
Warning: After any gas valve work, perform a leak test with an approved leak detection solution before restoring service.
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Repair Difficulty
Professional Required
5/5
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