Gledhill Repair Service

What does error code 56 mean on a Gledhill A-Class system?

Error code 56 on Gledhill A-Class systems indicates the bottom immersion heater has failed. Turn off the system and isolate from the electrical supply. The bottom immersion heater is the main off-peak heater that heats the entire store. Do not attempt to inspect or replace the heater yourself. Contact a qualified heating engineer to test and replace the immersion heater with a Gledhill-approved part.

What does error code 29 mean on a Gledhill A-Class system?

Error code 29 on Gledhill A-Class systems indicates a watchdog communication error between internal components. This is a terminal fault requiring professional repair. The Appliance Control Board and potentially other components need replacing. Contact Gledhill technical support or a qualified heating engineer.

What does error code 41 mean on a Gledhill A-Class system?

Error code 41 on Gledhill A-Class systems indicates the S4 temperature sensor (DHW outlet) has an open circuit. Turn off the system and isolate from the electrical supply. Inspect the sensor wiring and connections. If intact, the sensor needs replacing. Contact a qualified heating engineer to fit a Gledhill-approved replacement.

What does a slow flashing red light mean on a Gledhill PulsaCoil A-Class?

A slow flashing red light (once per second) on Gledhill PulsaCoil A-Class may indicate the unit has cooled and can be reheated using the On Peak Boost button, or it may indicate immersion heater element failure or burnt-out power relay. Try the boost button first; if no improvement, contact a qualified heating engineer.

What does error code 44 mean on a Gledhill A-Class system?

Error code 44 on Gledhill A-Class systems indicates the S2 overheat sensor has an open circuit. Turn off the system and isolate from the electrical supply. Check the sensor connections. The overheat sensor must be replaced to restore full safety protection. Contact a qualified heating engineer to fit a genuine Gledhill replacement part.

How do I drain my Gledhill cylinder?

To drain the cylinder, first turn off the boiler and immersion heater, then allow the water to cool before proceeding. Open all hot taps in the system and run until cold, then hold open the pressure and temperature relief valve until water stops discharging into the tundish. Open the ball-o-fix isolation valve before the anti-vacuum valve, then open the drain cock and immediately hold open the P&T relief valve again until the cylinder is completely drained.

Are Gledhill cylinders compatible with solar thermal panels?

Yes, Gledhill produces the Torrent SOL range specifically designed for use with solar thermal panels. These models feature a high-efficiency solar coil and can work alongside conventional boilers, providing mains pressure hot water. When solar energy is insufficient, the system automatically reverts to the boiler as the primary heat source. A backup immersion heater is also included for emergency use.

What pressure should the expansion vessel on my Gledhill cylinder be set to?

The air side of the expansion vessel should be set to 3 bar. This must be checked when the system is depressurised and the water is at atmospheric pressure.

Should I choose a vented or unvented Gledhill cylinder?

Choose a vented cylinder if budget is your primary concern or you need a reliable replacement for an existing system. Choose an unvented cylinder if space constraints exist or consistent high-pressure hot water is essential throughout your home.

Why is water dripping from the tundish on my Gledhill cylinder?

Small amounts of water dripping from the tundish during normal heating cycles is expected, as water expands when heated and the pressure relief valve may release a small amount. However, continuous or heavy discharge indicates a fault condition requiring attention.