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

Refrigerant circuit
(cont.)
Message Meaning
code
93 Compressor drive fault
S
94 Inverter communication
S
fault
98 Voltage difference of indi-
H
vidual phases too high
(> 5 A)
Message history [4]
For refrigerant circuit controller [4]: For differentiating
between the refrigerant circuit controllers, see chapter
"System information".
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.
■
1. Service menu:
Press OK + simultaneously and hold for
å
approx. 4 s.
2. "Diagnosis"
3. "Refrigerant circuit"
4. "Message history"
Message overview
Note
Some faults should only be remedied by a (specialist)
heating contractor certified for heat pumps by
Viessmann.
Heat pump characteris-
tics
Compressor OFF
Compressor OFF
Compressor OFF
A B
Message history
0 09.09.2009 17:16:00
1 09.09.2009 17:16:01
2 09.09.2009 17:16:02
3 09.09.2009 17:16:03
Back with
Fig. 35
Message number
A
Date and time of the last occurrence
B
2-digit message code
C
Type of message: "Note" or "Fault"
D
Frequency of occurrence
E
Refrigerant circuit controller messages can trigger a
message at the heat pump control unit (see "Message
overview"). Which message will be triggered at the
heat pump control unit depends on the type of mes-
sage at the refrigerant circuit controller.
Type of message at
refrigerant circuit
controller
"Note"
H
"Fault"
S
Measure
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 necessary.
Isolate the inverter from the power
■
supply. Then restore power supply.
Replace inverter if the fault persists.
■
Replace inverter.
C D
06 Fault
0A Fault
03 Note
10 Fault
Message at heat pump con-
trol unit
"07 Fault refrigerant circ"
"05 Fault refrigerant circ"
Diagnosis
use a suita-
E
7
3
11
1
153