REMKO SuperTec-Monitor User Manual

Page 25

Fault code

Meaning

Cause

Remedial measures

High pressure too high (63H
was triggered)

The high pressure switch 63H
was triggered because the high
pressure exceeded 4.14 MPa
during continuous condenser
operation.

Dirt on the heat exchanger in
the indoor module.
Pump motor in the indoor unit
jammed.
Malfunction of the pump motor
in the indoor module.
Faulty ball shut-off valve (not
fully open).
Blocked or cracked refrigerant
line.
Fan motor on the outdoor unit
jammed.
Malfunction of the fan motor
on the outdoor unit.
Air "short-circuit" on the
outdoor unit.
Dirt on the heat exchanger of
the outdoor unit.
Reduced airflow volume due
to inaccurate temperature
measurement on the outdoor
air temperature sensor
(measurement too low).
Defective contact of connector
63H to the control board of the
outdoor unit.
Faulty connection of 63H.
Control board of the outdoor
unit defective.
Faulty LEV
Defective fan drive
Too much refrigerant in the
system

Check components and rectify
cause of the fault.
Check that all ball shut-off valves
are fully open.
Check pipework and rectify fault.
Check outdoor unit and replace/
repair defective components.
Check the temperature sensor
with the help of the system
monitor and proceed accordingly
in order to rectify the fault.
Switch supply voltage off and
back on again once. Check if
fault codes "F5" or "UH" are
displayed. If so, see "Remedial
measures" for "F5" or "UH".
Check LEV.
Replace defective control board
of the outdoor unit.
Correct refrigerant level

Hot gas temperature too high

At hot gas temperature sensor
TH4, over 125°C was detected
or over 110°C for a period of 5
minutes.
In defrost mode, over 40°C
was detected at TH5 and over
110°C at hot gas temperature
sensor TH4.

Continued on the next page

Rise in temperature in the
condenser due to lack of
refrigerant.

Defective temperature sensor
TH4, TH5, TH6.

Control board of the outdoor
unit defective.

Faulty LEV.

Check inlet overheating.

Check pipework, refrigerant level
and additional fill amount.

Switch supply voltage off and
back on again once. Check
if fault code "U3" is then
displayed. If so, see "Remedial
measures" for "U3".

Check LEV.