gledhill Stainless Lite HP SOL Indirect 180-400 litres Design, Installation & Servicing Instructions page 26

SERVICING AND MAINTENANCE
START
YES
Is heat pump on?
YES
Is hot water programmer
in 'on' position?
YES
Is zone valve in
correct position?
YES
Is control temperature
set at 45ºC - 50ºC?
YES
Has high limit cut out?
YES
Re-set
END
START
YES
Is incoming mains supply
flow/pressure adequate?
YES
Is in-line strainer
(in combination valve)
clean?
YES
Is pressure reducing valve
(in combination valve)
working?
YES
Is system free from
restrictions/blockages?
YES
END
FAULT FINDING
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
NO
Water service check by
supply company required
NO
Clean or replace strainer
as appropriate
NO
Service /replace PRV
as appropriate
NO
Clear obstructions
FAULT - No Hot Water
NO
Re-wire
FAULT - Poor Water Flow at Hot Taps
Page 26