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Mend Optima 901 Home Heating Systems

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Latest Questions

Mend radiator thermostatic stuck
1 21 hours

One radiator in a bedroom is always cold?

One radiator in a bedroom is always cold. It used to work fine. I have tested the thermostatic value and the... [Read more]
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Sabre 29 water pressure drop?

sabre 29 water pressure dropped, how to increase the pressure
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Worcester Greenstar CDi boiler won't fire up the central-h?

flashing green light near the CH select button new batteries in transmitter
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Mend Optima 901

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We have 38 questions about mending 'optima 901' in category Heating, Home Heating Systems

How to mend Optima 901

Pages 21
Mend central heating thermostat heating system

optima 901 C/H not igniting?

My optima central heating is not igniting, the hot water side of it works fine, when I turn the thermostat on ... [Read more]
Mend heating radiators boiler
2

How do I stop water from flowing outside from my ferroli optima 901 boiler?

Pressure bar is constantly at 3. If I drain radiators, pressure reduces but then creeps back up again. I have ... [Read more]
Mend boiler heating ferroli
1

ferroli optima 901 c/heating problem?

heating will not come on but hot water ok. pump runs. boiler fires up when stone cold for c/h eventually but w... [Read more]
Mend boiler heating pressure

ferrioli 901 optima boiler?

boiler when running keeps pressure spot on,when boiler shuts off the pressure slowly drops off and needs to re... [Read more]
Mend hot water replace
1

The hot water sensor on ferroli Optima 901 keeps needing to be replaced?

I have had to replace the hot water and also heating sensor on our Ferroli Optima 901 combi boiler several tim... [Read more]
Mend boiler heating pressure loss
1

I have a ferroli optima 901 which keeps loosing presure?

It keeps loosing presure through the prv , I have renewed the prv and still loosing presure any ideas please
Mend relief valve pressure vessel heating system

how can i fix my boiler?

i have a ferroli optima 901 boiler i changed the pressure vessel as my heating engineer said that was the prob... [Read more]
Mend ferroli heating timer

How do you fit a Ferroli optima 901 clock/timer ?

How do you fit a Ferroli optima 901 clock/timer
Mend p c b unit

p c b unit?

wiring instructions for ferroli optima 701-901 pcb unit
Mend boiler heating ferroli
1

Hot water?

I have a Ferroli Optima 901 and I am only getting hot water when my heating is on the unit is ten years old
Mend boiler heating replacement

fitting new prv valve ferroli 901?

i have a ferroli 901 optima com boiler and i need to change the prv valve ,ihave purchased a new valve can you... [Read more]
Mend boiler heating radiators

How can I fix my Ferroli Optima 901 ??

The water pressure is on 1. I am still getting hot water although it comes out of the taps brown but the radia... [Read more]
Mend boiler combi ferroli

how to set the timer?

I have lost the timer instuctions for my Ferroli optima 901 combi boiler can you help please steve
Mend Heating, Home Heating Systems

optima 901 how can I get a users manual not installation manual?

Optima 901, looking for a users manual not the installation manual.
Mend central heating hot water circuit board
1

ferroli optima dhw is lukewarm?

Hi I have a Ferroli Optima (not sure of the model as this was here when i moved in). Recentley I have noticed ... [Read more]
Mend boiler heating repair

How can I fix my ferroli optima 901?

My bolier flame keeps going out. It will stay on for a while and then after 1/2/3 days it goes out. We had s... [Read more]
Mend boiler leak replacement

How can I fix my Ferroli Optima 901 Central Heating Boiler?

I have a Ferroli Optima 901 C/H boiler and Scottish Hydro have diagnosed a leak from the 'isolation valve'. ... [Read more]
Mend boiler heating pressure
1

FERROLI OPTIMA BOILER?

I have a ferroli optima 901 boiler which i am experiencing problems with. I have recently changed a radiator a... [Read more]
Pages 21

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Mend combi boiler central heating heating system

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Mend optima diverter valve

Optima 701 Diverter Valve?
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boiler turns off and on?

How to mend ...

Mend Alpha Mend Alpha Heating Mend Apollo Mend Ariston Mend Baxi Mend Bermuda Mend Berry Mend BIASI Mend Bosch Mend Boss Mend Boss Therm Mend Boulter Mend British Gas Mend Britony Mend Brittany Mend Brittony Mend Camray Mend Cannon Mend Canon Mend Celsia Mend Chaffoteaux Mend Chaffoteaux & Maury Mend Concord Mend Crane Mend Danfoss Mend Digistat Mend Dimplex Mend Drayton Mend Ecomax Mend Ferroli Mend Fertech Mend Firebird Mend Flexicom Mend Glow Worm Mend Glow-worm Mend Glowworm Mend Grant Mend Grundfos Mend Halstead Mend Harcal Mend Heatline Mend Heatslave Mend Honeywell Mend Horstmann Mend Hydroline Mend Icon Mend Icos Mend Ideal Mend Isar Mend Jaguar Mend Johnson & Starley Mend Keston Mend Kingfisher Mend Kohlangaz Mend Landis & Gyr Mend Lifestyle Mend Linea Mend Main Mend Medway Mend Modena Mend Morco Mend Myson Mend Netaheat Mend Ocean Mend Optima Mend Potterton Mend Powermax Mend Prima Mend Promax Mend Protherm Mend Pulsacoil Mend Puma Mend Randall Mend Ravenheat Mend Remeha Mend Riello Mend Sabre Mend Saunier Duval Mend Servowarm Mend Siemens Mend Sime Mend Stelrad Mend Swift Flow Mend Switchmaster Mend Thorn Mend Thorn EMI Mend Tiger Mend Trianco Mend Vaillant Mend Valiant Mend Viessmann Mend Vizo Mend Vokera Mend Vulcan Mend Worcester Mend Worcester Bosch

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