Viessmann VITOTRONIC 200 Service Instructions Manual page 163

Refrigerant circuit
(cont.)
Message Meaning
code
80 Max. compressor current
H
exceeded
81 Torque of compressor
H
drive too high
82 Mains voltage too high or
H
intermediate circuit volt-
age too high
83 Mains voltage too low or
H
intermediate circuit volt-
age too low
84 Temperature at inverter
H
(IGBT module) too high
86 Inverter power consump-
H
tion (IGBT module) per-
manently too high
88 Compressor drive blocked
S
for more than 5 s.
89 Inverter processor or da-
S
■
ta store faulty
A-D converter fault
■
Instrument transformer
■
faulty
8C Modbus communication
H
error
8F S Inverter blocked
99 Current difference of the
H
individual phases on the
compressor too high
9E 1 phase of inverter supply
S
voltage missing.
Heat pump characteris-
tics
Compressor OFF
Compressor OFF
Compressor OFF
Compressor OFF
Compressor OFF
Compressor OFF
Compressor OFF
Compressor OFF
Compressor OFF
Compressor OFF
Compressor OFF
Compressor OFF
Measure
Test coil resistance at compressor. Re-
sistance on all windings must be simi-
lar ( 10 %). For m use a suitable
± Ω
measuring device.
Test mains voltage at mains terminals:
If mains voltage is too high (+10 %),
clarify the cause in consultation with
the power supply utility.
Test mains voltage at mains terminals:
If mains voltage is too low (
clarify the cause in consultation with
the power supply utility.
Check inverter heat sink for contami-
nation. Replace inverter if required.
Test coil resistance at compressor. Re-
sistance on all windings must be simi-
lar ( 10 %). For m use a suitable
± Ω
measuring device.
Test coil resistance at compressor.
■
Resistance on all windings must be
similar ( 10 %). For m
± Ω
ble measuring device.
Replace compressor and/or inverter
■
if required.
Replace inverter.
If the fault is continually present, have
the compressor parameters ("5xxx")
checked by a specialist.
Switch OFF the power supply to the
outdoor unit. Wait at least 2 min.
Switch the power ON again.
Replace inverter if the fault persists.
Check connecting cable from inverter
compressor: See "Connection and
―
wiring diagram".
!
Please note
400 V appliances: An incorrect
rotating field will irreparably
damage the compressor.
When replacing the connecting
cable, ensure the phases are
connected correctly.
Check inverter power supply.
Diagnosis
10 %),
–
use a suita-
163