Ravenheat No Power / Dead Appliance

Furnace will not start at all, no display or lights on the control panel.

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.

Possible Causes

Blown fuse in fused spur, Tripped circuit breaker, Faulty main on/off switch on furnace, Internal PCB power supply failure

How to Fix / Troubleshooting

Safety: Before resetting breakers, ensure there is no burning smell or visible damage to the furnace.

User checks:

Check the household consumer unit for a tripped breaker or RCD and reset if appropriate.
Inspect the fused spur supplying the furnace; replace the fuse with the correct rating if blown.
Ensure the furnace's main power switch (if fitted) is in the ON position.

Technician checks:

Verify voltage at the appliance terminals.
Check internal fuses on the main PCB.
Inspect wiring for signs of overheating or loose connections.
Replace the main PCB if the internal power supply is defective.

Repair Difficulty

Medium 3/5

Required Part

Main Control PCB

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