9
Värmebaronen EK 13
Troubleshooting
Intervention that requires tools must be performed by a qualified electrician.
Fault
Possible cause of fault
Action
Operating indicators off.
Electric cartridge without
power.
Check the main fuses.
Main switch off.
Turn the switch to position I. The time delay function will lock the power
stages if it has been without power for more than three minutes.
The electric cartridge is
blocked by external equipment.
Check whether the electric cartridge is blocked by external control or
similar.
Overheating protection
triggered.
If the overheating protection has been triggered, the operation of the
system's circulation pumps and valves must be checked.
Reset by pressing the overheating protection button. This may take place
when the temperature has fallen below 80 °C.
Connection is limited by
a power cut.
It is possible to bypass the time delay function on the printed circuit board.
Load guard limits power
stages.
Check whether the load guard is connected and whether it is limiting the
power stages.
Operating indicator for
stage one off. Stage two
and/or stage three on.
Miniature circuit breaker in
automatic control cabinet
triggered.
Check where the short-circuit is. Take action. Then reset the miniature
circuit breaker.
Operating indicators for
stages two and three off.
Stage one on.
Miniature circuit breaker on
circuit board triggered.
Check where the short-circuit is. Take action. Then reset the miniature
circuit breaker.
Group fuses for electric
cartridge triggered.
Immersion heater faulty.
Switch off the main switch. Check the insulation of the immersion heater's
power groups. If any of the electric elements is faulty, replace the immersion
heater and the tank for the immersion heater.
The operation of the
electric cartridge is
irregular. The thermostats
are switching on and off
at regular intervals.
Water flow too low.
Check that the circulation pumps are working and that all necessary valves
are open.
The flow through the electric cartridge is checked as follows:
a. Limit the power stages of the electric cartridge so that the power output
is constant, for example to 1 power stage.
b. Let the temperature of the electric cartridge become stabilised and
measure the temperature increase between the flow and return lines of
the electric cartridge.
c. Calculate the water flow using the formula below.
Recommended flow: 0.3 litre/second,
∆
t = 10 °C.
q =
P
∆
t x 1.16
q = water flow in m3/h
P = cartridge's power output in kW.
∆
t = temperature difference in °C.
1.16 = water's thermal absorption coefficient.
To obtain the flow in litre/second, multiply q by 1/3.6
