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Viessmann B2HF - Checking the Fuse

Viessmann B2HF
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112
Checking the fuse
A
F1
Fig. 57
1. Turn off the ON/OFF switch.
2. Depending on the configuration: Move program-
ming unit together with bracket to service position.
3. Pivot the HMU heat management unit down.
4.
Remove cover
A
.
5. Check fuse F1 (see connection and wiring dia-
gram).
Danger
Incorrect or improperly fitted fuses can lead
to an increased risk of fire.
Insert fuses without using any force. Posi-
tion fuses correctly.
Only use structurally identical types with
the specified response characteristics.
Troubleshooting
Repairs (cont.)
5593201
Diagnosis

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