Mar 28 2020

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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Ensure that the boiler has electrical supply correct to V. Flow overheat — check water circulation. E02 No ignition after restart. 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. Open the catalog to page 3.

Keston C55

Possible fan disconnected or faulty. E30 Difference between flow and return temperatures too high. Open the catalog to page 9. Manial new element and reset thermal cut out output. After clearing the issue, you will need to reset boiler press reset buttonso that boiler resumes operation. Fire boiler and check for actual flue temperature. Check boiler earth and probe condition. Incorrect signal from fan. The fan speed has dropped below rpm.

Boiler is alight and running in response to a demand from DHW i.

Keston C55 Manuals

Difference between flow and return temperatures too high. Flue Exhaust Connection Time in hours since last error occurred. Boiler in standby waiting for demand signal.


Burner is off because the boiler is up to temperature. Check gas supply, gas valve operation and ignitor electrode spark generation E03 Gas valve faulty or not connected E04 Power has been reset whilst boiler was in lockout E05 Fan failure — boiler cannot manula fan rotation E07 Flue overheat.

The C45 and C55 boilers can be fitted in compartments with very small clearances required around the appliance refer to Section 1.

Boiler is running fan prior to attempting ignition. Auto Air Vent 4. Check fan, connections and fan pcb. The error code recorded for the lockout. Contact your Gas Supplier immediately.

Flow thermistor not connected or faulty. Check gas supply, gas valve operation and ignitor electrode spark generation. Air Supply for gas appliances of rated input not exceeding 70kW BS All parts are being sourced by same manufactures used for original assets production.

Keston KESTON C55 (Manual and User instructions) Diagram | Heating Spare Parts

General Instruction The Keston C45, C40P, C55 and C55P the flueway and is drained at the base of the flue connection to the heat exchanger or drain points within the flue. Open the catalog to page 4. They comprise a high efficiency stainless steel heat exchanger coupled with a low emissions burner to deliver ultra high efficiency mmanual mode operation within a compact wall hung cabinet. Boiler pump is in DHW overrun mode 2 mins.

Boiler off on front. Check power supply flashing off off Boiler off on front. Fan failure — boiler cannot detect fan rotation. Gas valve faulty or not connected.


Confirm cc55 power supply is reaching the elements. E08 Flame circuit error — possible control box fault E09 Valve drive error — possible gas valve or control box fault E10 Control box errors — possible faulty control box E11 Internal electronics error — rest or replace control box E12 Thermal fuse blown or flue overheat thermostat activated. Thermal fuse blown or flue overheat thermostat activated. Minimal size for inlet supply pipes is 15mm.


Check pump direction on boiler and any external pumps. Check the electrical circuits by testing short circuit, earth continuity and resistance to earth tests. Distances above or below 3 mm will affect ignition performance.

Waiting for fan to start. Flues for gas appliances of rated c5 not exceeding 70kW BS The integral Grundfos pump is automatically controlled to best match Boiler lost flame whilst running.

Check correct electrical polarity. Servicing your Appliance For safety and economy reasons your boiler should be serviced annually. Check wires on flow and return thermistors are not crossed B25 Flow temperature climbing too quickly. Gas pressures above or below these levels will kewton internal pressure issues with the gas valve.

Top up system pressure if sealed system.