Baxi combi 80 service manual

Replace the diaphragm assembly - Part No Automatic gas valve push rod jammed. Blocked water filter. Heat exchanger blocked with lime. Loss of service water main pressure. Contact your Local Water Authority. Water rate will be normal. Gas not turned on. Purge the air line by depressing and holding the centre ON button, this may take minutes. Incorrect pilot lighting procedure. Follow the lighting instructions located on the bottom cover or refer to the "Instructions for Use". Electrode lead not connected to the rear of the spark igniter.

Re-connect the electrode lead. Incorrect spark gap. The gap between the electrode tip and the pilot hood should be mm. Current tracking to earth. Check the electode lead is routed clear of all metal parts. Faulty components. Replace any faulty components found. No gas to the appliance 9. Thermocouple connections loose. Tighten the connections. Pilot flame 'soft' or too small to heat the thermocouple tip.

Pilot injector partially blocked, clear by bowling through or replace. Check the gas inlet pressure is correct - 20 mbar. Also clean the lint filter located at the base of the pilot tube. Thermocouple worn out or damaged. Faulty magnet unit in the flame safety device. Energy cut-off device connections loose.

Tighten connections. Energy cut-off device may be faulty. Check out the Baxi Solo 2 Troubleshooting tables to help you correct the issue with your boiler. Order replacement parts as identified by the fault finding guide. Loose screws at joints or fittings - detective "O" ring damaged valve casting at joint - defective burner feed pipe. Burner Pilot on but burner will not ignite. External controls or boiler thermostat not calling for heat - blown fuse - defective power supply or external controls - soleniod open circuit test for continuity at solenoid terminals - injector blocked - inadequate gas supply - faulty gas valve.

Pilot established and main burner will ignite but system liable to nuisance shut - down. Dirty or loose thermocouple connections - defective thermocouple - defective flame safety magnet - incorrect or faulty wiring - overheat cut-off device defective - adverse wind conditions - incorrectly filled terminal - partially blocked pilot injector.

Main burner will not shut down in response to external controls. Main burner pressure incorrect. Throttle screw requires adjustment - after adjustment recheck pressure. Overheat Thermostat Overheat cut-off device operates repeatedly. System temperature higher than design temperature - main thermostat faulty - overheat thermostat faulty - central heating pump not functioning correctly - pump overrun timer faulty- no by- pass-by-pass closed - installation fault - no permanent live - pump not wired to boiler - incorrect use i.

Overheat thermostat reset but boiler cannot be reignited. Thermocouple damaged - connections between thermocouple, overheat thermostat and gas valve faulty or poor - overhear thermostat faulty. Pilot Pilot will not light. Main gas tap off - ignition restart interlock is still engaged - gas control knob not fully depressed - pilot feed not purged of air - pilot feed blocked - pilot injector blocked - electrode lead or ignitor faulty - overheat cut-off device has operated - if on gravity, overheat thermostat wires may not be piggybacked.

Pilot established when gas control knob released but pilot flame does not fully envelop the thermocouple. Incorrect or faulty pilot injector fitted - pilot injector partially blocked. Pilot lights but goes out when gas control knob is released. Gas control knob released too soon - dirty or loose connections - defective thermocouple or flame safety magnet - overheat cut-off device activated - partially blocked pilot injector.

Main burner will ignite but pilot flame is immediately extinguished. Incorrect pilot injector - gas supply too small or restricted - adverse wind conditions - incorrectly filted terminal - partially blocked pilot injector. Baxi Solo 3 troubleshooting charts are useful for diagnosing the problem with your boiler and identifying a replacement part to get your boiler operation again. Diagnose your Baxi Thames Boiler with the useful fault finding tables below.

If you need replacement parts use the fault finding table to determine the troubled component. Repair or replace. Call in your local British Gas Region 2. Low water flow caused by blocked water filter.

Dismantle dean and regrease using Dow coming silicone grease. Slow ignition screw incorrectly set Will also cause a high water rate. See Fig. Thermostat throttle stuck in the open position.

Descale, regrease and replace 'O' rings as necessary. Dismantle dean and regrease using Dow Coming silicone grease. Thermostat bellows perforated. Temperature selector set to '1'. Turn selector to '5'.

Dismantle clean and regrease using Dow coming silicone grease. Slow ignition screw incorrectly set will also cause a high water rate. Frost damage to thermostat bulb. Recognised as a crused bulb. Descale, regrease and replace '0' rings as necessary. Noisy ignition could be caused by incorrect setting of the slow ignition screw. When correct the burner igniiton sholud be smooth and quiet when a hot water outlet is opened.

Reduced pilot rate caused by dirt. Also clean the lint fiter located at the base of pilot tube. Faulty case or terminal seal. Failure to follow Instruction with regards to openable windows and doors. Check the electrode lead is routed clear of all metal parts. Call in ypur local British Gas Region. Pilot injector partially blocked, clear by blowing through or replace.

Also clean the filter located at the base of the pilot tube. Baxi Combi Boiler Baxi combi boiler models, troubleshooting, comparison, parts, manual, drawings, help. Troubleshooting Manual. Fault Finding Charts and Tables The troubleshooting manuals below is an easy step by step process to fault find your Baxi Combi Boiler. For a quick and easy check conduct the following: Electrical.

Analyse the electrical circuits by using a multimetre inspecting for for short circuits, earth continuity and earth resistance. Check that the system has correct polarity. Check that your boiler has a supply voltage of V. Gas Supply. Check your boiler has a gas supply. Ensure supply has been sufficiently purged.

Water Filling. Inspect your boiler making sure it is full of water and has a pressure of Too little water in your boiler will reduce your efficiency. Check your heating temperature is set on to the maximum setting. External Controls. User guides, installation instructions or brochures for discontinued products can found using the links below. There are currently no literature files available. If you need support, please call Notice x.

Technical Support Helpline Cookie Policy So we can give you the best possible experience, we use cookies on our website. Product literature Follow the links below for the product literature for all our Baxi boilers. Opt in to our newsletter NOW and join us! Discontinued products User guides, installation instructions or brochures for discontinued products can found using the links below. If you need support with an old boiler, call us on Part 1 Part 2.