203 0 Low
Your boiler is working correctly but currently has no request from your thermostat or taps to provide heating or hot water.
Technical description: Boiler in standby – no heat energy demand
Typical repair cost: £0 (including labour)
DIY fix possible
Check that your room thermostat is turned up higher than the current room temperatureEnsure your heating programmer or timer is set to 'On'Check if the batteries in your wireless thermostat need replacing
Protect yourself from future repair bills
A boiler cover plan would cover faults like 203 0 — no call-out fees, no surprises.
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