Measures in case the room temperature is constantly too low
Carry out the following steps to troubleshoot the problem.
1.
Increase the set room temperature
for standard operation (see operat-
ing instructions).
2.
Check the outside temperature
sensor (see page 107).
3.
Adjust the heating curves (see
operating instructions).
4.
Vent the heating circuit.
5.
Hydraulically balance the con-
nected heating circuit(s).
6.
Check the throughput of the heat-
ing circuit(s) concerned.
7.
Allow heating operation via the
optional instantaneous heating
water heater (see page 142).
No display in the display field of the programming unit
Carry out the following steps to troubleshoot the problem.
1.
Switch the system ON/OFF switch
ON (see page 174).
2.
Check the fuse; replace it if
required (see page 174).
3.
Check whether there is voltage at
the power feed to the control unit/
electronics; provide power if
required.
4.
Check the plug-in and threaded
connections.
5.
Replace the power supply unit.
6.
Replace the programming unit.
7.
Replace the main PCB.
Refrigerant circuit service valves
!
Please note
If work on the refrigerant circuit is carried out incorrectly, there is a risk of
equipment damage.
The following steps must only be carried out by authorised contractors.
Diagnosis
119
Troubleshooting
55
92
968
GB
Service
Summary of Contents for VITOCAL 200-G
Page 8: ...Certificates Declaration of conformity 201 Keyword index 202 Index cont 8 Index 5592 968 GB ...
Page 122: ...Main menu Information Menu structure overview information 122 Control settings 5592 968 GB ...
Page 187: ...Parts lists cont 187 Parts lists 5592 968 GB Service ...
Page 188: ...Parts lists cont 188 Parts lists 5592 968 GB ...
Page 189: ...Parts lists cont 189 Parts lists 5592 968 GB Service ...
Page 206: ...206 5592 968 GB ...
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