gledhill StainlessLite D120 Design, Installation & Servicing Instructions page 26

SERVICING AND MAINTENANCE
START
Is power on to elements?
YES
Is control temperature
set at 60ºC - 65ºC?
YES
Has high limit tripped?
YES
Check wiring links
continuity and Re-set
END
START
YES
Is boiler on?
YES
Is hot water programmer
in 'on' position?
YES
Is zone valve in
correct position?
YES
Is control temperature
set at 60ºC - 65ºC?
YES
Has high limit cut out?
YES
Re-set
END
FAULT FINDING
NO
Switch on
NO
Re-set
NO
Replace element
NO
Switch on
NO
Set programmer
NO
Re-set, check wiring &
plumbing is correct
NO
Re-set
NO
Is all wiring to the
controls ok?
YES
NO
Replace thermostat
FAULT - No Hot Water (Direct)
FAULT - No Hot Water (Indirect)
NO
Re-wire
Page 26