14
Ground Source Heat Pumps Since 1983
3. USER INFORMATION
3.1. Lämpöässä settings
Information in this section has been compiled from the Lämpöässä 201GT/203GT Manual, which, in addition to the
following, includes more detailed information on the various functions and detailed reading(s).
3.2. Care and maintenance
The Lämpöässä heat pump is an easy-care heating system. It requires no regular maintenance and its simple structure
makes Lämpöässä reliable to use. 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.
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 compres-
sor 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.
The display is broken/the circuit board of the regulator
is faulty.
Contact maintenance.
