FERROLI OPTIMA 701 INITIALLY WOULDN'T GIVE HOT WATER & CENTRAL EVEN THOUGH DEMAND FOR BOTH WAS SET. BOILER WAS FIRING UP AND GIVING 1 OF THE 2 SERVICES SO THOUGHT IT COULD BE THE DIVERTER VALVE. YESTERDAY THE HEATING WAS PROGRAMMED TO COME ON BUT FAILED HAVING BEEN ON AT LUNCHTIME. PILOT LIGHT AND PUMP BOTH OPERATING NORMALLY BUT BURNER FAILED TO FIRE UP SO CHECKED HOT WATER AND THAT FAILED ALSO. TRIED C/H ON MANUAL - NOTHING & THEN HOT WATER ON ITS OWN AND NOTHING. ANYONE ANY SUGGESTIONS. DON'T WANT TO SPEND ANY MORE THAN NECESSARY TO REPAIR IT WHEN A COMBI OF SAME OUTPUT AVAILABLE AT £400approx.
BOILER IS ABOUT 8YRS OLD - IS THIS THE LIFE EXPECTANCY?? IS THERE A COMBI THAT WILL UTILISE THE SAME FIXING TEMPLATE i.e. CAN I JUST BOLT A NEW COMBI IN PLACE WITHOUT HAVING TO MODIFY MY PLUMBING OR BALANCED FLUE? PLEASE HELP - IT'S FOR MY PARENTS WHO ARE PENSIONERS. Tel 07812 094279
having similar prob.. think it might be down to (34)c h flow temperature sensor.mine pegs out at around 45degs and when temp cools i unplug and replug sensor and she fires up reheats then pegs out again.
Hi Russ
Check that the pump is working first if not take the bottom front panel off Check operation using LED's as a fault finding guide. First check section A, then B, then C, then D.
0 = LED off 1 = LED on x = LED either on/off is not important
Domestic Hot water tap open (Flow rate greater than 2,5 l/min)
LED OK FAULT POSSIBLE CAUSE OF FAULT
1 1 0 No mains electricity/switches off/fuse blown.
2 1 0 D.H.W. flowmeter (136) not operating.
3 X X Not required for D.H.W.
4 1 0 - D.H.W. sensor (42) not connected or D.H.W. temperature too high
5 0 1 - Waiting time operating: replace P.C.B.
6 1 0 Short circuit on D.H.W. sensor (42) or resistance lower than 500 Ohm
- C.H. limit thermostat (50) open circuit (pump run)
- C.H. water pressure low (114 open circuit)
A
B
CENTRAL HEATING ON Room stat (72) at Max, HW tap closed
LED OK FAULT POSSIBLE CAUSE OF FAULT
1 1 0 No main electricity/switches off, fuse blown.
2 0 1 Hot water tap open - D.H.W. flowmeter (136) contact closed
3 1 0 Roomstat (72) or clock (62) not calling for heat
4 1 0 - Central heating sensor (34) not connected or
- boiler temperature too high or
- boiler thermostat (61) below CH temperature
5 0 1 Waiting time still operating (max. 3 minutes)
6 1 0 - C.H. sensor (34) short circuit or resistance lower than 500 ohm
- C.H. limit thermostat (50) open circuit (pump will run)
- C.H. water pressure low (114 open circuit)
C
IGNITION OF PILOT
1 Fan (16) should run at full speed for at least 20 seconds
(open hot tap or set controls so boiler is callingfor heat).
2 Check first A, B and C above
3 Push ignition button (60) fully in
4 Microwitch (66) will close
5 Ignition transformer (67) will energise
6 Check spark and position of spark electrode (24)
D
GENERAL TEST FOR D.H.W. AND CENTRAL HEATING (First check A and B above)
LED/REL. OK FAULT POSSIBLE CAUSE OF FAULT
RY2 energised not energised Check first A and B above
RY4 energised not energised Air pressure switch (43) not in NC position or miswired:
- check wiring
- fan (16) at low speed remove jumper JP4
7 1 0 - fan (16) not running at full speed or
- air flow too low:
- air pressure switch (43) faulty if you need more help mail me on wharff.60@btinternet.com
Information posted by users should be considered for general guidance only. Users act, or refrain from action, on the basis of such information entirely at their own risk.
fixed4free.com does not endorse any of the information supplied on this website by users.