Boiler Repairs

Basic trouble shooting and fixing simple errors

 

As professional Gas Safe Register installers for gas boilers, MP GAS AND PLUMBING are fully qualified and experienced to service, upgrade and repair all types of boiler, and carry out repairs to existing hot water and central heating systems.

It’s important to us that that we can always repair and maintain each and every type of boiler available on the market and ensure our customers have hot water and heating systems working at the peak of their efficiency.

To guarantee that we are always able to provide our customers with the highest standards of professional service and boiler care we constantly keep up with all the latest technical trouble-shooting advice and information.

Many of today’s modern systems are manufactured with on-board self-diagnostics, which supply fault light indicators or error codes to help owners and engineers to quickly find out the source of a problem and how it may be remedied.

Customers can often save time and money by being able to remedy a simple fault themselves or provide the information about a boiler problem if they can understand the fault indicator or error code when they first speak with a plumber over the telephone.

Code A prefix                                                                PCB programming code

 

Cause                                                                          Usually due to a power supply fluctuation

 

Remedy                                                                       Resetting the boiler should clear the code

 

Code 0 prefix or Number without letter prefix                   Normal operating status codes

 

Cause                                                                          See user guide below

 

Remedy                                                                       In all cases attempt to reset the boiler

                                                                                  before calling an service engineer.

 

 

Normal operating fault codes an owner may be able to clear

 

CODE             POSSIBLE FAULT                                           REMEDIAL ACTION

 

E110              Overheating                                                  Ensure radiators are bled of air

 

E119              Low water pressure                                       Add water to the system via filling loop

 

E125              Overheating                                                  Ensure radiators are bled of air

 

E131              Overheating lock out                                      This may follow a power cut try reset

 

E133              Gas supply fault                                            Check gas is turned on. If prepayment meter check there is credit.

                                                                                        If all ok and E133 persists – contact Engineer.

 

E168              PCB lock out                                                 This may follow a power cut try reset

 

Please Note: When an error code is displayed that is not itemised in the above table, then you will need to call an qualified and experienced Gas Safe Baxi service engineer, such as MP GAS AND PLUMBING, and quote the error code displayed.

 

GA Range – Combi Neta-tec / Combi-tec / System Megaflow Compact

 

All fault codes on the Baxi GA range of boilers are shown as:

E with additional numbers(s) following.

 

Code does not have an E prefix                       Normal operating status code or boiler on/off or temperature etc

 

Cause                                                           See user guide below. Please note: power cuts can affect the normal boiler operation.

 

Remedy                                                        In all cases attempt to reset the boiler before calling a service engineer.

 

 

Normal operating fault codes an owner may be able to clear

 

CODE            POSSIBLE FAULT                                            REMEDIAL ACTION

 

E53               Poor combustion                                            Check flue terminal is not obstructed

 

E110             Overheating                                                   Ensure radiators are bled of air

 

E117             System water pressure HIGH                           Bleed water from radiators

 

E118             System water pressure LOW                            Add water via filling loop

 

E125             Overheating                                                   Ensure radiators are bled of air

 

E133             Gas supply fault                                             Check gas is turned on. If prepayment meter check there is credit.

                                                                                        If all ok and E133 persists – contact Engineer.

 

Please Note: When an error code is displayed that is not itemised in the above table, then you will need to call an qualified and experienced Gas Safe Baxi service engineer, such as MP GAS AND PLUMBING, and quote the error code displayed.

 

Avanta Range – Combi Exclusive / Combi Plus / System Plus / Heat only

 

Fault codes on the Avanta range of Baxi boilers are shown as:

 

E with additional number(s) following.

 

Code does not have an E prefix                             Normal operating status code or boiler on/off or temperature etc

 

Cause                                                                 See user guide below. Please note: power cuts can affect the normal boiler operation.

 

Remedy                                                              In all cases attempt to reset the boiler before calling a service engineer.

 

Normal operating fault codes an owner may be able to clear

 

CODE           POSSIBLE FAULT                                            REMEDIAL ACTION

 

E1               Overheating                                                    Bleed radiators. Check system water pressure; if low refill via filling loop

 

E2               Circulation                                                      Bleed radiators. Check system water pressure; if low refill via filling loop

 

E4               Ignition failure                                                Ensure gas supply is turned on. If meter is prepayment ensure there is credit

 

E7               Poor circulation                                               Bleed radiators. Check system water pressure – if low refill via filling loop

 

Please Note: When an error code is displayed that is not itemised in the above table, then you will need to call an qualified and experienced Gas Safe Baxi service engineer, such as MP GAS AND PLUMBING, and quote the error code displayed.

 

Error code E168

 

There are SIX Baxi boilers that could report an E168 error:

 

Duo-tec Combi HE Duo-tec Combi HE A

 

Megaflo System HE Megaflo System HE A

 

Platinum Combi HE BPlatinum Combi HE A

 

Error code E168 usually reports on one of four problem areas.

 

The first two problems listed below are the most common:

 

The boiler has been reporting other codes previously

 

Other error codes will have been displayed before code E168. The boiler will have detected a fault and displayed the error code associated with the

problem. The boiler will then have been reset, either automatically or manually.

Once the boiler starts up again it may not be able to detect the original fault and so will display E168 as a replacement for the previous code.

 

Codes that can display prior to E168 are:

E20            Boiler temperature sensor fault

 

E28            Flue gas temperature sensor fault

 

E50            Domestic Hot Water temperature sensor fault

 

E110          Overheating (O/H) Thermostat operated – check to circulation and connections to O/H T/stat

 

E119          Water pressure switch cut out (low water pressure in boiler and system)

 

E125          Boiler max temperature exceeded – possible circulation fault

 

E130          Flue gas max temperature exceeded – check connections and flue NTC

 

E131          Power has been turned off during E125 or E130 faults. Check cause of E125 and E130

 

E133          Flame not established in time – checks to be made to gas supply – flue system – condensate discharge – spark generator – electrodes –                        leads and wiring harness connections

 

E156          Under voltage (lower than 195V) has been supplied to boiler

 

E160          Fan system fault

 

If any of these codes were seen before E168, the faults can be fixed by reference to the above codes.

 

The mains supply to the boiler has been interrupted or is irregular

 

The display of an E168 code could mean that the boiler has been experiencing a voltage either above or below the required 230V supply and can be difficult to identify as irregularities may only occur at certain times.

 

Please Note: The above information is for guidance only. You will need to call an qualified and experienced Gas Safe Baxi service engineer, such as MP GAS AND PLUMBING, for further advice.

 

The remaining two problem areas concern boiler components, which may not be operational, lack electrical connectivity, or the PCB ( printed circuit board) has developed an issue and needs to be replaced.

Baxi Fault codes

 

Fault codes will be displayed on Baxi boilers to indicate there is an issue. There are different codes to indicate different categories of issues. The most common error codes are explained below:

 

HE A Range – Combi Platinum / Combi Duo-tec / System Megaflow / Heat only Sola

 

All fault codes on the HE A range of Baxi boilers are shown as:

Alternative flashing E or E1 and then two additional numbers with or without a letter prefix.

MP Gas and Plumbing,

15 Holden gardens
Basildon

Essex

SS14 3LF

Phone : 07894994021

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Gas Safe Register Nr. 588980

Gas Safe Register is the official list of gas engineers who are registered to work safely and legally on gas appliances having replaced CORGI registration. Visit the website to learn more:

www.gassaferegister.co.uk

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