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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Outside temperature — display indicates a small graph on the bottom row. Open the catalog to page 4. The boiler has tried five times to fire and has not suceeded. Further distance it is pipe size should be greater. Keston Qudos 28h boiler has an unique feature of error history. E28 Fan not rotating — check fan connection and fan for fault. Always isolate the electrical supply before opening heating elements.

All parts are being sourced by same manufactures used for original assets production. Gas pressures above or kwston these levels will cause internal pressure issues with the gas valve. This way it guarantees quality, reliability and safety.

Check pump and fan run-on working OK when controls shut blr down. Replace thermal fuse link 82OC.


Possible air lock or circulation blockage B26 Low water pressure B28 No signal from fan. Flow thermistor not connected or faulty. Open the catalog to page 5. Minimal size for inlet supply pipes is 15mm.

E30 Difference between flow and return temperatures too high. Burner is off because the boiler is up to temperature.

Flues for gas appliances of rated input not exceeding 70kW BS Flue temperatures above 75C may cause reduced boiler output. Time in hours since last error occurred. Actual Flue Temperature — display indicates the flame and fan symbols NB: Flow temperature exceed 95o C. Boiler off on front. Open the catalog to page 2.

However, the resulting weight will still be higher than considered acceptable for a one-man lift. The most common error codes are included manyal the table below: Ensure that the boiler has electrical supply correct to V. Manuual power off and on at the fused spur.

Keston C55 Manuals

Waiting for fan to start. Confirm that power supply is reaching the elements. Auto Air Vent 4. Open the catalog to page 8. Return temperature exceeded 95o C.

Troubleshooting Manual | Keston Boilers Guide

B29 Incorrect signal from fan. Flue temperatures above 80C will cause boiler lockout. Only relevant if an outside temperature sensor is detected. Check by-pass fitted on off flashing Cabinet overheat. If thermal cut off switches have operated press in the red button.


Check circulation through system. Keston Boilers Guide All Keston gas boilers for your home including parts, troubleshooting and efficiency! Open the catalog to page 6.

Keston C55 Manuals

After clearing the issue, you will need to reset boiler press reset button maunal, so that boiler resumes operation. Check boiler earth and probe condition. Boiler is alight and running in response to a demand from DHW i. Return temperature exceeded flow temperature. Check the system pump performance and the system for blockages.

Reset boiler off then on via User Control Knob. This fault display indicates a fault on the wiring loom. If this fails to heat the cylinder the element has failed and should be replaced. They comprise a high efficiency stainless steel heat exchanger coupled with a low emissions burner to deliver ultra high efficiency condensing mode operation within a compact wall hung cabinet.

Check wires on flow and return thermistors are not crossed.