Checking Outputs (Actuator And Sensor Test) - Viessmann Vitovalor PT2 Installation And Service Instructions For Contractors

Diagnosis and service checks
Gas condensing module
5. "Message history"
The following is displayed in the message lists:
■ Date and time of the occurrence of the notifica-
tion
Notification number
■
Description of the notification
■
Subscriber number of the component on which
■
the message has occurred:
PlusBus subscriber components
0 EM-S1 extension (ADIO electronics
module)
1 - 15 EM-M1, EM-MX and EM-P1 extensions
(ADIO electronics module)
17 - 31 EM-EA1 extension (DIO electronics
module)
32 - 47 Cylinder module, EM-M2, EM-S2 exten-
sions (M2IO electronics module)
49 - 63 Vitotrol 200-E
64 SDIO/SM1A electronics module
CAN BUS subscriber components
1 HMU heat management unit
50 BCU burner control unit
58 RF module (wireless module)
59 HMI programming unit
60 Fan unit
90 Gateway
Low power radio subscriber components
48 - 63 Vitotrol 300-E

Checking outputs (actuator and sensor test)

Note
When the actuator and sensor test is started, all actua-
tors are initially disabled or valves moved to their cen-
tral position.
Tap the following buttons:
01. " "
02. "Service"
03. Enter password "viservice".
04. Use to confirm.
05. "Actuator and sensor test"
108
(cont.)
6.
7. If you wish to delete the messages, tap .
8.
06.
07. Use
08. Tap the required actuator function. Several func-
09. If necessary, tap
10. Use
"Faults" to call up saved fault messages. For
■
further details, see the following chapter "Fault
messages".
■ "Service messages" to call up saved service
messages.
P.1 Interval until the next service.
P.4 Top up heating water.
P.8 Interval in burner hours until the next serv-
ice.
■ "Status", to call up the saved status messages.
S.60 Summer mode active (exterior temperature
savings function)
S.75 DHW circulation pump active
"Warnings" to call up saved warning messages.
■
A.12 Real time clock battery flat.
Measure: Replace the battery
(type CR2032) in the HMU heat manage-
ment unit.
A.18 Possible condensate backup in the heat
cell
Measure: Check the combustion chamber
and condensation drain.
A.20 Service interval could not be activated.
Measure: Check the time and date set-
tings.
"Information", to call up saved service informa-
■
tion.
I.55 Maximum DHW temperature reached
I.56 External demand active
I.57 External blocking active
I.59 Parameters have been restored (parameter
set was flashed to BCU electronics mod-
ule).
to confirm
to confirm the security prompt.
Note
If an actuator function is not possible due to the
running process, the function is interrupted. A
message appears.
/ to select the required group. See the
table below.
tions can be activated simultaneously.
to confirm. The functions are
active for 30 s.
to terminate the Actuator and sensor test.