Warnings; Repairs; Moving The Programming Unit To The Service Position - Viessmann Vitovalor PT2 Installation And Service Instructions For Contractors

Troubleshooting

Warnings

Message, con- System characteristics
trol unit / fuel
cell
A.5/04F0 System in operation
A.6/04F1 System in operation
A.7/06F0 System in operation
A.8/08F0 System in operation
A.12 System in operation
A.18 System in operation

Repairs

Moving the programming unit to the service position

If necessary, the programming unit can be attached to
the side panel for service work.
136
Cause
45 days until the 5-yearly
service
30 days until the 5-yearly
service
3 months until required re-
pair
6 months until decommis-
sioning (after 20 years of
operation)
Real time clock battery
flat.
Possible condensation
water accumulation in the
heat cell
Measures
Carry out the 5-yearly service.
Carry out the 5-yearly service.
Schedule repair.
Schedule decommissioning.
Replace battery in heat manage-
ment unit.
Check combustion chamber and
condensate drain.