Boiler Quickies Boiler expansion vessel poor access easy way to access the valve, gas meter tightness test, 10mm socket is the easiest...

Boiler Quickies To drian down this boiler you need a big philips screwdriver or a 13mm spanner, a ratchet spanner is best, you could...

Boiler Quickies Boiler quickies, how to find I would fault codes on your boiler Vailliant Ecotec. Bring up the last five codes. Boiler...

How to check your immesrsion heater with a multimeter. Be careful, make sure you carry out all safety checks, if in doubt get a qualified...

Be careful, there are live electrics here. Take all relevent precautions to ensure your safety, If in doubt consult a qualified...

How to put a vaillant into test mode, the purge program is important, this is the P0 program, but you can also access P1 & P2. Boiler...

Override a port valve to get heating hot water back on. Gas Safe engineer. Cheshunt. Enfield ware. Gas safe landlord gas checks...

To check the pressure on your boiler using the digital display Press "i" and then "-"

Vaillant TurboMax, If you display is not working it could be the Main PCB or the small control panel, this is how to test it with a...

Landlord gas safety check, carried out for a freeholder as Harlow council require this for all multi occupancy buildings, blocks of...

This boiler flue is not sealed correctly and fails a Landlord gas safety check, carried out for a freeholder as Harlow council require...

Freeholder Gas Gafety Check is the same as a Landlord gas safety check, carried out for a freeholder as Harlow council require this for...

F.75 Fault: Pump/ water shortage: Water pressure sensor and/or pump defective, air in the heating installa- tion, insufficient water in...

F.74 Fault: Water press. sensor: The line to the water pressure sensor has a short circuit to 5 V/24 V or internal fault in the water...

F.73 Fault: Water press. sensor: Interruption/short circuit of water pressure sensor, interruption/short circuit to GND in supply line to...

F.72 Fault: Flow/return sensor: Flow/return NTC temperature difference too great → flow and/or returntemperature sensor defective

F.71 Fault: Flow sensor: Flow temperature sensor signalling constant value:– Flow temperature sensor incorrectly positioned at supply...

F.70 Fault: Invalid Device Specific Number: If spare parts fitted: Display and PCB replaced at same time and DSN not reset, incorrect or...

F.68 Fault: Flame signal unstable: Air in gas, gas flow pressure too low, incorrect air ratio, condensate duct blocked, ionisation flow ...

F.67 Fault: Electronics/flame: Implausible flame signal, electronics defective