Manuals and User Guides for Keston C C55P. We have 1 Keston C C55P manual available for free PDF download: Installation And Servicing Instructions. Keston C55 Pdf User Manuals. View online or download Keston C55 Installation And Servicing Instructions, User Instructions. WD The Keston C45, C40P, C55 & C55P CONTENTS Section Description 0 HANDLING INSTRUCTIONS List of contents Recommended handling.

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Due consideration should therefore be given to access Turn power off and on at the fused spur.

Keston C55: C55P Manuals

Ensure that the boiler has electrical supply correct to V. Fit new element and reset thermal cut out output. Check the electrical circuits by testing short circuit, earth continuity and resistance to earth tests. Open the catalog to page 6. Safety footwear and gloves are recommended PPE when lifting this appliance.

Reset button on a Combi boiler The most common block codes are included in the table below: Distances above or below 3 mm will affect ignition performance. Waiting for fan to start. Open the catalog to page No power to boiler. Thermal fuse blown or flue overheat thermostat activated. System water pressure, in bar. Leston the system pump performance and the system for blockages. After this boiler will try to ignite. Gas valve faulty or not connected. Flame signal lost 5 times in 4 minutes — the flame is unstable.


Return thermistor not connected or faulty. Ksston Intake Connection Keston Combi, Keston Heat, Keston Incorrect signal from fan. Open the kkeston to page 8. Flow temperature exceed 95o C. Only relevant if an outside temperature sensor is detected. Outside temperature — display indicates a small graph on the bottom row. Check pump direction on boiler and any external pumps. No signal from fan.

Keston C55 Manuals

Before installing Keston boiler, you need to first think of diving gas source to other gas appliance at your real estate. Before Keston boiler installation we advice that current meter should be checked to assure no failures to installation by meter faults or inability to provide demanded gas pressure.

Boiler has opened gas valve and is sparking at ignitor. Flue temperatures above 80C will cause boiler lockout. Flame circuit error — possible control box fault. The mmanual code recorded for the lockout. The fan speed has dropped below rpm. The most common error codes are included in the table below: This way it guarantees quality, reliability and safety. Flue temperatures above 75C may cause reduced boiler output.

All Keston boiler repair and replacement parts are being supplied by national service boiler engineering team. Code Meaning E00 Flame detected when not expected.


Flow overheat — check water circulation. Control box errors — possible faulty control box. Flues for gas appliances of rated input not exceeding 70kW BS Gas pressures manusl or below these levels will cause internal pressure issues with the gas valve.

Valve drive error — possible gas valve or control box fault. Open the catalog to page 2. Turn User Control Knob to On.


External controls not calling for heat. Fire boiler and check for actual flue temperature. For indirect models you will need to turn off boiler heating option too. Flue Exhaust Connection Power has been reset whilst boiler was in lockout.

The integral Grundfos pump is automatically controlled to best match Servicing your Appliance For safety and economy reasons your boiler should be serviced annually.

Check power supply flashing off off Boiler off on front.

After clearing the issue, you will need to reset boiler press reset buttonso that boiler resumes operation.