Viessmann Vitocrossal 300 Series Service Instructions Manual page 96

Troubleshooting
Corrective Action
Legend
A Integrate EA1 module
B Power/pump connection interface
C Fuse F1 (Integrate EA1 module)
D Fuse F2 (Power/pump connection interface)
E Fuse F1 (Power/pump connection interface)
96
(continued)
Vitocrossal 300 CU3A 26 to 199 Service
Checking the electrical connect module fuse
1. Switch off the power.
2. Remove front panel and cover (see page 93).
3. Check fuse F1 and F2 of the power/pump connection
interface.
4. Check fuse F1 and F2 of the integrate EA1 module.