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5.
Cylinder making banging noise
a.
Due to cylinder expansion through heat. Ensure that a cold water expansion valve and
a hot water TPR valve are fitted and working.
6.
Sensor Error.
a.
Check that the plastic surrounding the roof sensor has not melted to cause a short).
NB Only the metal sensor should be inserted into the probe pocket.
b.
Check that the screw into the wire at the control box is screwed into the wire and
not the plastic.
c.
To check if a wire fault, switch with a dummy sensor.
7.
Funny temperature readings
a.
Check the right sensor is used in the right position. PT1000 for roof and NTC for
the cylinder.
8.
Element not coming up to 60C
a.
Check probe contact with cylinder and allow 8°C for losses.
b.
Check timing and temp of heating program.
c.
Check clock time, check night rate and ripple control potential conflicts with timers.
9.
Night circulation from cylinder to panel
—due to controller not reaching pump off Temp differential (DTF)
a.
Improve connection with T2 Probe.
b.
Increase DTO and DTF by 5 degrees each.
10.
Too much hot water—system is always boiling
a.
Remove tubes.
b.
Install heat dump loop.
c.
Set controller to holiday mode.
d.
Look at heating timing.
