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Maintenance and Service
Nibe F205P - hot water low pressure after 1 minute
Nibe F205P heat pump produces very low pressure hot water.
Hot water pressure is strong when you first open a tap but then gradually reduces to a trickle.
The fault is a Pressure Reducing Valve (PRV) is faulty.
Replace the PRV. Replacement part is - 520-467-0829 Pre-Set at 3.5 Bar - 330 Series Domestic Pressure Reducing Limiting Valve with Cold Take Off - PRED330006
Isolate water from the mains stop cock before replacing the part.
Bristan Prism - No water. Faulty Flow Diverter Cartridge (APT 04895)
Bristan Prism shower valve no water is coming out when turning the flow handle.
The Diverter cartridge is faulty or a Spline is weary. Repalce the part.
Part number is Bristan Prism Spline Adaptor (8/20 To 11/30) (mz) APT 04895
Alpha CB28x - Red and Amber light are on - Faulty PCB (1.017118)
Alpha CB28x combination boiler - No hot water, no heating
- Red and Amber light are on
- Power goes to the Pump
- No power goes to the Fan when heat demand is present
- Faulty PCB
- The part number is - 1.017118
Alpha CD50 - no lights - Faulty PCB (1.027267)
Alpha CD50 has no light on the front panel and both heating and hot water don't work
- Check the PCB fuse. Replace if necessary
- If after replacing the fuse boiler makes a loud noise from a transformer (located in the burner chamber behind the fan) then PCB is faulty
- Replace PCB. The part number is 1.027267
Vaillant ecoTec plus 831 - F.75 error message - faulty expansion vessel (181051)
Vaillant ecotec Plus 831 shows an error code F.75 after few minutes of trying to ignite
- Check the pressure sensor and the pump. If they both are fine then look at the expansion vessel
- Open a recharge nipple and press. If water is coming from the vessel then the expansion vessel is faulty and needs replacement.
- The part numbers are: Vaillant Ecotec Expansion Vessel 181051
2017-05-06Pages: Previous      1 2 3 4 5 6 7 8 9 10 11 12 13 14 ..... 48 49 50 51       Next