DHW pump High
Your boiler is struggling to manage the temperature of its internal hot water store, meaning you likely have no hot water available.
Technical description: If flashing this indicates either a store thermistor or PCB fault
Typical repair cost: £180-£450 (including labour)
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Protect yourself from future repair bills
A boiler cover plan would cover faults like DHW pump — no call-out fees, no surprises.
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Parts commonly replaced
- Domestic Hot Water (DHW) Store Thermistor
- Main Control PCB
- Wiring Harness
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