Pichler PKOM4 - Page 52

OPERATING AND INSTALLATION MANUAL HEAT PUMP COMBI UNIT PKOM4 PAGE 52
USER
GENERALSPECIALIST PERSONNEL
37
FU communi-
cation
Erroneous BUS communica-
tion between the main board
and the frequency inverter
Check terminal M6 on heat pump board N3 Restore terminal contacts
Check the terminal of the plug on frequency
inverter T1
Restore terminal contacts
Check cable W63 Replace cable W63
Check whether a bus connection in heating/cool-
ing operation is established: LED on terminal M6
on heat pump board N3 is blinking
a) Replace heat pump board N3
b) Replace frequency inverter T1
No error detectable Please contact your service partner
38
FU max. tem-
perature error
Frequency inverter overheats
Check frequency inverter T1 Replace frequency inverter T1
No error detectable Please contact your service partner
39
FU motor start
error
Frequency inverter cannot
start the "heating/cooling"
compressor
Check the terminals on frequency inverter T1 Restore terminal contacts
Check cable W54 Replace cable W54
Check frequency inverter T1 Replace frequency inverter T1
Check "heating/cooling" compressor G2 Replace "heating/cooling" compressor G2
No error detectable Please contact your service partner
40
FU motor
current
error 1
Too high motor current over
a period of 4 minutes
Check frequency inverter T1 Replace frequency inverter T1
Check "heating/cooling" compressor G2 Replace "heating/cooling" compressor G2
No error detectable Please contact your service partner
41
FU motor
current
error 2
Motor current 1.25 times
too high over a period of 2
minutes
Check frequency inverter T1 Replace frequency inverter T1
Check "heating/cooling" compressor G2 Replace "heating/cooling" compressor G2
No error detectable Please contact your service partner
42
FU motor
current
error 3
Motor current 1.5 times
too high over a period of 1
minute
Check frequency inverter T1 Replace frequency inverter T1
Check "heating/cooling" compressor G2 Replace "heating/cooling" compressor G2
No error detectable Please contact your service partner
43
FU motor
current
error 4
Motor current twice too high
over a period of 10 seconds
Check frequency inverter T1 Replace frequency inverter T1
Check "heating/cooling" compressor G2 Replace "heating/cooling" compressor G2
No error detectable Please contact your service partner
44
FU short circuit
current error
Short circuit current on the
frequency inverter
Check the terminals on frequency inverter T1 Restore terminal contacts
Check cable W54 Replace cable W54
Check frequency inverter T1 Replace frequency inverter T1
Check "heating/cooling" compressor G2 Replace "heating/cooling" compressor G2
No error detectable Please contact your service partner
45
FU motor
phase error
Missing phase on the com-
pressor
Check the terminals on frequency inverter T1 Restore terminal contacts
Check cable W54 Replace cable W54
Check frequency inverter T1 Replace frequency inverter T1
Check "heating/cooling" compressor G2 Replace "heating/cooling" compressor G2
No error detectable Please contact your service partner
46
FU motor stand-
still error
No compressor speed
Check frequency inverter T1 Replace frequency inverter T1
No error detectable Please contact your service partner
47
FU motor con-
trol error
Overvoltage or
undervoltage error
Check frequency inverter T1 Replace frequency inverter T1
No error detectable Please contact your service partner