45
Troubleshooting
Faults which are not displayed at the programming unit
(cont.)
Boiler hot enough, but the heating circuit pumps will not run
Set the emissions test switch to
h
H
Pumps are running
→
No pump control:
Check heating curves, set values and heating circuit pump logic, possibly
also external hook−up (control module V, solid fuel boiler, etc.) or high
DHW demand.
H
Pumps are not running
→
H
Pumps are not running
→
Is plug
sÖ
’live’ between L and N?
No
Yes
Check fuse F2, 4A (slow).
If the fuse has blown:
1.
Pull the plugs off pumps
and mixer motors.
2.
Replace the F2 fuse.
3.
Reconnect devices in
sequence to determine
which one is faulty.
4.
Repeat this test, if the
fuse F2 remains intact,
but the pump connection
does not go ’live’.
Possibly replace the
main PCB.
1.
Check pump connection and the pump.
2.
Check any additional control devices (e.g.
maximum thermostat).
5862700GB
Содержание Vitotronic 200 KW2
Страница 22: ...22 Installation Installing the top part of the control unit 5862 700 GB 7 5 1 4 6 2 3 ...
Страница 23: ...23 Installation Opening the control unit 5862 700 GB 3 2 1 ...
Страница 104: ...104 Coding 5862 700 GB ...
Страница 106: ...106 Parts list Parts list cont 5862 700 GB 070 010 042 043 065 019 020 018 074 013 015 074 040 041 ...
Страница 108: ...108 Connection and wiring diagram Connection and wiring diagram 5862 700 GB F2 4A slow 250V F1 slow 6 3A 250V ...
Страница 118: ...118 5862 700 GB ...
Страница 119: ...119 5862 700 GB ...