How much does it cost to fix Remeha error code 8-9?

Typical repair cost for the Remeha 8-9 fault is £90-250 including labour.

8-9 High

Remeha 8-9 Fault Code

Q: What does the Remeha 8-9 fault code mean?

Your boiler has lost its electrical power supply and cannot turn on or heat your home.

Also written as 89 — same fault.

The Remeha 8-9 fault code means: your boiler has lost its electrical power supply and cannot turn on or heat your home.. It appears on 3 Remeha models in our database.

Technical description: No power supply

What causes the Remeha 8-9 fault?

This fault occurs when the boiler's internal computer system is no longer receiving the electricity it needs to operate. The most common reason is a blown fuse on the main circuit board or a failure of the external power switch supplying the unit. In some cases, an internal electrical short or a faulty control board is preventing the power from flowng through the system.

Typical repair cost £90-250 (including labour)

DIY fix possible

Check if other appliances in your home have power.Verify that the boiler's fused spur switch is turned on.Check your home's main consumer unit (fuse box) to see if a circuit breaker has tripped.

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Remeha models that show the 8-9 fault code

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

Source

Remeha 8-9 fault code information on this page is sourced and cross-checked against the official Remeha service / installation manuals for each affected model.

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