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3.2. Care and maintenance
The Lämpöässä heat pump is an easy-care heating system. It requires no regular maintenance. If the installation is
carried out carefully and in accordance with the instructions provided, there is usually no need for maintenance. The
fill container inside the geothermal heat pump should be checked every couple of weeks during the first few months
and afterwards approximately once a month for the first year of use thereafter.
3.3. Troubleshooting
If an alarm sounds, we always recommend that you first check that the regulator does not have the 5-minute compres-
sor running prevention enabled. The facility can be overridden by turning the master switch to 0 and back.
The geothermal heat pump is controlled according to two measured values: the measured value at the bottom and at
the top of the water tank. A minimum value is determined for each set value in the “Set values” section. In practice,
consumption of hot water also starts the compressor. The lower the minimum set value for the lower part of the water
tank, the more economical the use of the system. However, it is important to note when determining the set value that
values which are too low will reduce the amount of hot water available. Further information is available in the section
of the Lämpöässä instructions entitled, “Full power geothermal heating 201/GT and 203/GT”.
Problem
Possible cause
Solution
The compressor does not
start
The water tank temperature is adequate and in accordance
with the regulator.
No action required.
The compressor has been stopped for less than 5 minutes. No action required.
Fuse problem.
Check the condition of the fuses in
the master switchboard.
The compressor does not
start and the regulator
display reads: “divergence
alarm reading 4 compressor
operation”.
The protection switch for the motor has gone off.
OR
The suction pressure switch on the pressure switch has
gone off.
Press the protection switch for the motor.
OR
Set off the switch.
No text is visible on the
regulator.
The device is not getting any power.
Check that the control current and
master switch are on.
A fuse has blown.
Replace the fuse (125 mA).
The display is broken/the circuit board of the regulator is
faulty.
Contact maintenance.
Thermal relays go off
immediately when power is
switched on.
The protection switch for the motor goes off if the
equipment is short-circuited or one of the phases is not on.
Contact an electrician.
Fuses in the master switchboard of the building are faulty.
Check the condition of the fuses and
replace as required.
Regulator display reads:
Enter code
You have attempted to change the settings in maintenance
mode.
Special settings for maintenance
mode are not required for normal
use. Set values for temperatures can
be set in normal mode.
The system does not produce
enough heat
A sudden drop in outdoor temperature may temporarily
cause inadequate heating power in new buildings, because
moisture contained in the structure takes up a lot of heat
when it dries.
No action required.
During the first year, the ground loop may not produce heat
at full power because the earth around the ground loop
pipes has not yet become more solid.
No action required.
