- Any UFH experts in here tonight
Are the actuators on the manifold?
Have they seized after a summer of inactivity? Why two actuators – do you mean two circuits in one room? Or one actuator and one manual lockshield on the manifold for the room?
Can you open the actuators manually?
Are the thermostats wireless? Are they still paired with the receiver correctly? If they are wired can you use a multimeter to check that they close the circuit at the wiring centre?Posted 4 years ago
I dont have manifold actuators nyself, but Im going to guess that they have a screw down collar that holds them down on to a valve pin. If you remove them then the valve should be wholly open. Does that sound familiar? You should be able to then check that the pin lifts properly (is not seized) and of course check that hot water flows too.
If that isnt the problem then you need to check the thermostat closes a contact at the wiring relay with a multimeter. But only if you are competent with mains electrics.Posted 4 years ago
Oil fired UFH system. Worked faultlessly for 5 years until now.Posted 4 years ago
The rooms are individually controlled by room thermostats. One of our rooms is not heating up and noticed
The 2 thermo actuators for the room are not opening when the stats are calling for heat.
Took both actuators apart freed off the sticking pin and gave them both a good clean.
Dialed in some heat on the room stat and bingo both actuators opened.
I don’t think the UFH in this room has been used much as we have a log burner in it so possibly caused by lack of use.
Thanks for your help stoner
P.s. do these systems need any maintenance? It’s never been touched in 5 yearsPosted 4 years ago
I dont know about maintenance, bear has much more experience so may be able to offer some advice based on years of knowledge.
I guess keeping on top of the inhibitor concentration in the system and maybe considering one with a biocide too?
Maybe override the thermostats a couple of times a season to make sure the valves are used.
And of course change the batteries in the thermostats 🙂Posted 4 years ago
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