nilan CTS602 HMI - Common Problems and Solutions; Heating System Performance Issues

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Problems and solutions central heating
Problem Possible cause Solution
El-supplementation central heating is
turned on much or always
The heat pump will not work effectively,
which may be due to various reasons.
- Check that there is no ice in the evapo-
rator surface in the outdoor unit. It pre-
vents the air from getting through.
- Check that the evaporator surface in
the outdoor unit is not stopped with
leaves and other debris that can prevent
the air from getting through. Clean the
evaporator surface.
- Check that the hoses between the out-
door unit and the indoor unit are properly
insulated so that there is no excessive
heat loss.
- Check that there is a proper flow in the
circuit between the outer part and the
inner part.
El-supplementation domestic hot water
is turned on much or always
The heat pump will not work effectively,
which may be due to various reasons.
- Check that there is no ice in the evapo-
rator surface in the outdoor unit. It pre-
vents the air from getting through.
- Check that the evaporator surface in
the outdoor unit is not stopped with
leaves and other debris that can prevent
the air from getting through. Clean the
evaporator surface.
- Check that the hoses between the out-
door unit and the indoor unit are properly
insulated so that there is no excessive
heat loss.
- Check that there is a proper flow in the
circuit between the outer part and the
inner part.
DHW AIR outdoor unit has a large power
consumption
This may be because the heat pump does
not run optimally for various reasons.
- Check that there is no ice in the evapo-
rator surface in the outdoor unit. It pre-
vents the air from getting through.
- Check that the evaporator surface in
the outdoor unit is not stopped with
leaves and other debris that can prevent
the air from getting through. Clean the
evaporator surface.
- Check that the hoses between the out-
door unit and the indoor unit are properly
insulated so that there is no excessive
heat loss.
- Check that there is a proper flow in the
circuit between the outer part and the
inner part.