Viessmann VITOTRONIC 200 Service Instructions Manual page 165

Refrigerant circuit
(cont.)
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.
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. 37
Message number
A
Date and time of the last occurrence
B
2-digit message code
C
Type of message: "Note" or "Fault"
D
E Frequency of occurrence
Message Meaning
code
01 Short circuit/lead break,
S
primary circuit flow tem-
perature sensor (heat
pump brine inlet)
03 Short circuit/lead break,
S
suction gas temperature
sensor
04 Short circuit/lead break,
S
hot gas temperature sen-
sor
05 Short circuit/lead break,
S
high pressure sensor (liq-
uid gas pressure sensor)
06 Short circuit/lead break,
S
liquid gas temperature
sensor
C D E
06 Fault 7
Fault
0A 3
03 Note 11
10
Fault
1
Heat pump characteris-
tics
Compressor OFF
Compressor OFF
Compressor OFF
Compressor OFF
Compressor OFF
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 Message at heat pump con-
refrigerant circuit trol unit
controller
"Note" "07 Fault refrigerant circ"
H
"Fault" "05 Fault refrigerant circ"
S
Measure
Check resistance value (NTC 10 k
at connection J13 (T5) of the EEV
PCB: See "EEV PCB [4-6] / [4-7]".
Check resistance value (NTC 10 k
at connection J13 (T4) of the EEV
PCB: See "EEV PCB [4-6] / [4-7]".
Check resistance value (NTC 10 k
at connection J13 (T6) of the EEV
PCB: See "EEV PCB [4-6] / [4-7]".
Check current at connection J10 (P2)
of the EEV PCB: See "EEV PCB
[4-6] / [4-7]". Take refrigerant R410A
into account.
Check resistance value (NTC 10 k
at connection J13 (T7) of the EEV
PCB: See "EEV PCB [4-6] / [4-7]".
Diagnosis
)
Ω
)
Ω
)
Ω
)
Ω
165