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Fig. 5

Table of Error Codes

E20 Central Heating NTC Fault

E28 Flue NTC Fault

E50 Hot Water NTC Fault

E110 Safety Thermostat Operated

E119 Water Pressure Switch Not Operated

E125 Circulation Fault (Primary Circuit)

E130 Flue NTC Operated

E133 Interruption Of Gas Supply or Flame Failure

E160 Fan or Fan Wiring Fault

5.0Care of the Boiler

5.1Cleaning the Outer case

The painted panels should be wiped with a damp cloth and then dried completely. DO NOT USE ABRASIVE CLEANING AGENTS.

5.2Protection & Precaution

1.The boiler incorporates an integral frost protection feature that will operate in both modes. If the boiler temperature falls below 5° C, then the boiler will operate until the water temperature has been raised.

2.If a system frost thermostat has been fitted (your installer will be able to advise you), then to operate correctly and protect your system, the gas and electricity must be left on and the appliance set in the central heating mode.

3.The boiler incorporates an integral pump protection feature which continually monitors the time since the pump last operated. To prevent seizure, the pump will operate for approximately 1 minute if it has not run in the last 24 hours.

5.3Fault Indication

1.If a fault occurs on the boiler an error code may be shown on the facia display (Fig. 5).

2.The codes are either two or three digit, preceded by the letter 'E'. For example, code E133 will be displayed by 'E1' alternating with '33'. E50 is shown as 'E' then '50'.

3.E20, E28, E50, E125 & E160 indicate faulty components. You should make a note of the displayed error code and contact your installer or service engineer.

4.If E110 or E130 is displayed overheat of the primary water or flue system has occurred. Turn the selector switch to the reset position and hold for at least 5 seconds. If the boiler does not relight, or the code is displayed regularly contact your installer or service engineer.

5.E119 is displayed when the primary water pressure is less than 0.5 bar. After repressurising the system the boiler should operate. Your installer will be able to advise you about the method of repressurising. See page 6 for further details.

6.E133 indicates that the gas supply has been interrupted, ignition has failed or the flame has not been detected. Ensure that the gas supply has not been turned off, and turn the selector switch to the reset position and hold for at least 5 seconds. If the boiler does not relight, or the code is displayed regularly contact your installer or service engineer.

8© Baxi Heating UK Ltd 2012

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Baxi Potterton Promax Combi 24 HE Plus A warranty Care of the Boiler, Table of Error Codes, Fault Indication