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Miscellaneous
Dealing with malfunctions
Dealing with malfunctions
Checking the status
Scroll to channel S1 using the plus button to read off the
status and any alarms. See the section "Control" – "Channel
description".
NOTE
Work behind covers secured by screws may only be
carried out by or under the supervision of a qualified
installation engineer
NOTE
The product's serial number should always be stated
with all correspondence with NIBE.
_ _ _ _ _ _ _ _ _ _ _ _ _ _
NOTE
In the event of any defrosting problems, the value in
channel A11 can be increased to relieve the problem.
36
F2015 is not operational
Cause:
External control equipment has not given the
start signal.
Action:
Check the settings on the control equipment.
Cause:
Fuses have tripped.
Action:
Replace the fuse or reset the MCB. If the fuse
trips again the installation engineer should be
contacted.
Cause:
Motor cut-out has tripped. Indicated as 07 in
channel S1.
Action:
Check the fuses.
Cause:
Cold outdoor air. Indicated as 03 in channel S1.
Action:
Wait until the outdoor air temperature is higher
than the heat pump's set stop value.
Cause:
Tripped high pressure pressostat. Indicated as
06 in channel S1.
Action:
Check that the system has been vented correctly.
Check the fuses. Check that the particle filter is
not blocked. Check that the circulation pump is
rotating. If the fault remains contact the installa-
tion engineer.
Cause:
Tripped low pressure pressostat. Indicated as 05
in channel S1.
Action:
Ensure that the air flow is not blocked. If the
fault remains contact the installation engineer.
Cause:
Flow and return line sensors fitted incorrectly.
Indicated as 12 in channel S1.
Action:
Contact installer.
Cause:
The heat pump does not defrost.
Action:
Check the temperature on the return line sensor
(channel T3). If it is below 10 °C the heat pump
will not defrost. Check the temperature on the
evaporator sensor (channel T7). If it is higher
than the set Start temperature, defrosting
(channel A9) during compressor operation the
heat pump does not defrost.
Cause:
Time conditions do not permit start.
Action:
Wait until the set conditions have run out. (If C
flashes in the display the start conditions have
been given.)
Cause:
Outdoor temperature hotter than 35 °C. Indic-
ated as 13 in channel S1.
Action:
Wait until the outdoor temperature is colder
than 33.0 °C.
F2015
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