Grant QR Range - Hot Water Flow and Temperature Issues

Page 26 Section 8: Fault Finding
8.4 COLD WATER FLOW FROM HOT WATER TAPS
Cold water from hot water taps
Is programmer calling for hot
water?
Is motorised valve working?
Is boiler/heat pump working?
Check and set hot water
setting
Is cylinder stat calling for
heat?
Check motorised valve and
microswitch
Has thermal cut-out operated?
Check and reset button
Check and replace cylinder
thermostat
Test for correct operation. If
water is still cold, contact a
competent engineer.
Yes Yes
Yes
Yes
Yes
NoNo No
No
Yes
No
8.3 NO FLOW FROM HOT WATER TAPS
No ow from hot water taps
Mains supply disconnected?
Check any in-line strainers which may be tted to the
system and clean as required
Open supply valve or wait for
supply to be reconnected
No
Yes
Test for correct operation. If water is still not owing, contact a
competent engineer