A.O. Smith BFM 80 - Manual (Page 27)

27
4.3 Detailed fault finding INSTALLER
no
Check
voltage present
at connection 1.
Reinstate voltage supply
no
Ensure connections correct,
if yes replace FILTER
Ensure connections correct,
if yes replace ON/OFF switch
Check
voltage present
after FILTER
Check
voltage present at
gate 3 ON/OFF
switch
Check
voltage present
at gate 11 and 12
CONTROL
THERMOSTAT.
1. Check if controle thermostat is closed
2. Ensure connections correct.
3. If yes replace CONTROL THERMOSTAT.
yes
yes
no
yes
yes
no