Pump over run thermostat 87˚C High

Firebird Pump over run thermostat 87˚C Fault Code

Also written as PUMPOVERRUNTHERMOSTAT87C — same fault.

The Firebird Pump over run thermostat 87˚C fault code means: your boiler has reached a high temperature because the pump stopped spinning prematurely, preventing the system from cooling down properly.. It appears on 1 Firebird model in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: If a permanent live supply is not provided, the circulating pump will stop should the boiler temperature exceed 87˚C.
Typical repair cost £120-250 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Firebird models that show the Pump over run thermostat 87˚C fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Firebird Pump over run thermostat 87˚C fault code information on this page is sourced and cross-checked against the official Firebird service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026