Hi All,
I have a 10 year old Glow-worm Ultracom 12hxi condensing boiler.
It would appear that my three way valve (mid position actuator) has gone faulty. I noticed that the house was getting very warm but the room thermostat was set below the air temperature. Did not really think about it until I tried to shower and found the water cold. The boiler was getting a demand from the hot water thermostat so I am guessing the the actuator was directing the water to the CH system. I switched off the power and the system and the actuator returned to rest position. I then switched it on again and there was no movement even though the water tank had to be in demand given the water temperature. I would prefer to replace only the motor, if possible, so that I do not have to drain the system but do not know whether that is a good idea or even possible. The valve is a Drayton MA1 and has been installed for at least 20 years. I would appreciate any advice regarding how I can be sure it is the motor or is it better to go for a full replacement?
Thanks
Bob
I have a 10 year old Glow-worm Ultracom 12hxi condensing boiler.
It would appear that my three way valve (mid position actuator) has gone faulty. I noticed that the house was getting very warm but the room thermostat was set below the air temperature. Did not really think about it until I tried to shower and found the water cold. The boiler was getting a demand from the hot water thermostat so I am guessing the the actuator was directing the water to the CH system. I switched off the power and the system and the actuator returned to rest position. I then switched it on again and there was no movement even though the water tank had to be in demand given the water temperature. I would prefer to replace only the motor, if possible, so that I do not have to drain the system but do not know whether that is a good idea or even possible. The valve is a Drayton MA1 and has been installed for at least 20 years. I would appreciate any advice regarding how I can be sure it is the motor or is it better to go for a full replacement?
Thanks
Bob