Fault
Leakage at floor-standing
Heating-up time too long
Industrial water temperature
too low
16
Fault-Cause-Remedy
Cause
Flange leaking
hot water tank
Pipe connections leaking
Hot water temperature too low
standing hot water tank,not at
the boiler)
Heating water amount too small
(causes large spreading,
i.e. return temperature too low)
Heating coil does not bleed
Calcification of heating surface
Thermostat switches off too earlyReset thermostat
Return temperature too low
(e.g. excessive spreading)
Remedy
Re-tighten screws.
Replace seal.
Re-seal
Increase temperature (adjust
(measure at the supply of floor-
controller)
Larger pump
Observe back pressure of
parallel heater circuit
Bleed repeatedly with
switched-off pump
Decalcify heating surface
Larger charging pump
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