Message History [4-6] / [4-7] - Viessmann VITOTRONIC 200 Service Instructions Manual

Diagnosis
Refrigerant circuit
Message Meaning
code
A0 Current sensor phase L1
S
of compressor supply volt-
age faulty
A1 Current sensor phase L2
S
of compressor supply volt-
age faulty
A2 Current sensor phase L3
S
of compressor supply volt-
age faulty
A3 S Current sensor power fac-
tor correction filter faulty
A4 Temperature sensor, in-
S
verter (IGBT module) faul-
ty
A5 Temperature sensor pow-
S
er factor correction filter
faulty
A8 Compressor drive over-
H
heated
A9 Current phase L1 of com-
H
pressor too high
AA Current phase L2 of com-
H
pressor too high
AB Current phase L3 of com-
H
pressor too high
AC Current of power factor
H
correction filter too high
(detected via sensor)
AD Current of power factor
H
correction filter too high
(detected via software)
AE Voltage of power factor
H
correction filter too high
B3 Motor of fan 1 (top)
S
blocked
B5 Motor of fan 2 (bottom)
S
blocked
C4 Slip of compressor drive
H
too high
Message history [4-6] / [4-7]
For refrigerant circuit controller [4-6] / [4-7]: For differ-
entiating between the refrigerant circuit controllers, see
chapter "System information".
164
(cont.)
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
Compressor OFF
Fan off, compressor re-
mains in operation.
Fan off, compressor re-
mains in operation.
Compressor OFF
Measure
Replace inverter.
Test coil resistance at compressor.
■
Resistance on all windings must be
similar (
ble measuring device.
Replace compressor and/or inverter
■
if required.
Replace inverter.
If motor is mechanically sluggish, re-
■
move blockage. Replace motor if
necessary.
If the motor turns easily, notify a spe-
■
cialist.
No action required
Message history of the refrigerant circuit controller
(status and fault information):
■ Messages cannot be acknowledged in the message
history.
■ Messages are listed in chronological order. The most
recent message is listed first.
Up to 30 entries are stored.
■
10 %). For m use a suita-
± Ω