Unknown
Return Thmr Fault on Ideal Evomax

Ideal Evomax fault code Return Thmr Fault

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

What the manual says

Manufacturer manual

Return thermistor fault

From this model's manual
Verified against the Ideal/Ideal Gc No 41 750 38a installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

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

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All 34 fault codes on the Evomax

Seeing a different code? Every code this model can display, in one place.

16767778798081828384858687888990BCC FaultCylinder Thermistor FaultError 20Ext’ Interlock OffFalse Flame LockoutFan FaultFlame LossFlow Thermistor FaultFlow/Return ReversedIgnition LockoutIgnition Lockout [16]Low Mains VoltageLow Water PressureOutside Sensor FaultOverheat LockoutPCB FaultToo Many Resets

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