Difference between revisions of "Talk:Boiler repair"

Revision as of 13:29, 2 March 2007

We could do with a collection of boiler-specific faults somewhere. This should probably be in an article of its own, but for the moment I'll use this as a notepad for snippets as they come in --John Stumbles 13:02, 23 February 2007 (GMT)

Keston C25 ignition failures: one common reason for this is the electrodes moving apart. Do not try and bend them back when cold. Someone here said that you can straighten an electrode when hot (hold in gas hob flame) but I've not tried this myself.; The biggest downside to Kestons seems to be parts availability

Ideal Response 120 losing water pressure

"Is the heat exchanger leaking yet?"
"How badly is it leaking now?"

Potterton Suprima locking out: PCB fault: replacement from CET Ltd

Baxi Barcelona: leaks

Ravenheat RS84F

short cycling: cause unknown Screwfix forum
thermistors "notorious" for unreliability

Ravenheat LS80: unreliable thermistors - can replace wet-pocket sensor p/n 0007TER05005/0 with clip-on p/n 0007son11010/0 (both cost over £20 + VAT!)

icos / isar / istor boiler fault: fault not uncommon with this type of boiler gas valve.; l..f flashing; voltage at the gas valve on the conector (still connected) fine; negative vacuum on the venturi fine; connector is faulty: plug tight on gas valve pins but not making contact. Aparently this is common.

isar: PCB fault which causes fuses to blow on supply cct when DWH called for

Gloworm Fuelsaver F ... comes on and the flame kicks in for about 5-10 seconds and then goes out.: Fuelsaver - some have a problem - the fans have windings which are prone to overheating and a resettable thermal fuse which will cut out when the windings get hot (a matter of seconds to minutes) and close again when the windings cool down

Generic parts in boilers

Could do with info on what parts of what boilers are replaceable by standard or generic parts.

Diverter valve diaphragm repair kit from Banico (BES stock code 17115) is claimed to fit Giannoni and also Mutmacanica(?) valves. Checked OK for Worcester CDi.
Many boilers use standard Grundfos (or other) pumps and one can just replace the heads (though on some - such as Potterton Performas - you can't, even though they look from the outside like standard Grundfos heads).

Must-also-replace parts

Some repairs involve replacing various O-rings, fibre washers etc. Would be good to know which, and if generics are OK.

Info, manuals etc on-line

Baxi-Potterton

Glow-Worm

product literature

Worcester / Worcester-Bosch

gas-fired boiler manuals
Worcester 28i & 24i Installation & Servicing (not available from Worcester web site. NB manuals for both models are in this PDF.)

Ravenheat

Inst & Serv Mans

@@ Line 40: / Line 40: @@
 Could do with info on what parts of what boilers are replaceable by standard or generic parts.
-* BES do a diaphragm repair kit for which they have scant information. Would be useful to have some idea which boilers it's compatible with.
+* Diverter valve diaphragm repair kit from [http://www.banico.co.uk/Products/mut/divertervalves.htm Banico] (BES stock code 17115) is claimed to fit Giannoni and also Mutmacanica(?) valves. Checked OK for Worcester CDi.
 * Many boilers use standard Grundfos (or other) pumps and one can just replace the heads (though on some - such as Potterton Performas - you can't, even though they look from the outside like standard Grundfos heads).