Fault Finding - Redring MW10 Handbook

Once the element is free from the water container the anode may then be
inspected and removed if necessary.
When reassembling the cover make sure that the regulation knob is
coupled with the thermostat.

Fault finding

1) Pressure and temperature valve dripping/running all the time.
Cause: Thermal cut-out and thermostat have failed (this is only the case
if the water being discharged is near to boiling).
Mains pressure is above 7 bar. A pressure reducing valve must be fitted
(refer to diagram 2).
2) Pressure relief valve dripping/running all the time.
Cause: Mains pressure is above 6 bar. A pressure reducing valve must be
fitted (refer to diagram 3).
3) Dripping while unit heating.
Cause: Not enough pipe work for expansion; or stop-cock, non-return
valve or pressure reducing valve has been fitted within the distance
required for expansion (refer to diagrams 4&5). If an expansion
vessel has been fitted, the charge may have failed.
4) No hot water.
Cause: Thermal cut-out has operated.
The heating element has burnt-out.
The thermostat is faulty.
5) Milky water.
Cause: This is a result of heavily limed and oxygenated water being
heated. This is harmless and the cause is the water and not the heater.
6) No water at all.
Cause: Valve incorrectly fitted.
Debris in the mains.
Mains water supply turned off.
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