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Troubleshooting
FAULT
No water flow from hot taps.
Water from hot taps is cold.
Intermittent water discharge
Continuous water discharge
Room thermostat does not switch
on or not work properly
Disconnect electrical supply before removing any electrical equipment covers.
NOTE
44
POSSIBLE CAUSE
1. Mains supply off.
2. Strainer blocked.
3. Cold water inlet Pressure Reducing
Valve incorrectly fitted.
1. Immersion heaters not switched on.
2. Immersion heater thermal cut-out has
operated.
3. Programmer set to central heating or
not switched on.
4. Boiler not working
5. Motorised valve not operating correctly.
1. Reduced internal expansion.
2. Thermal control failure. (Note Water will
be hot).
1. Cold water inlet Pressure Reducing
Valve not working
2. Temperature and pressure relief valve
faulty.
3. Expansion relief valve not working
correctly.
Wireless room thermostat batteries not
Working
REMEDY
1. Check and open stopcock.
2. Turn off water supply. Remove strainer and
clean. (See Pressure Reducing Valve page 6
Installation Manual)
3. Check and refit as required (see item 3 page 5
of installation manual).
1. Check and switch on..
2. Check and reset button. (See thermostat
diagram page 9 and safety cut-out on page 4 of
installation manual).
3. Check and set to hot water.
4. Check boiler operation. If fault suspected,
consult installer or boiler manufacturer.
5. Check wiring and/or plumbing connections to
motorized valve.
1. Repressurize expansion vessel. Follow cold
water discharge instructions on page 4.
2. Switch off power to immersion heater(s) and
boiler supply to the unit. When discharge has
stopped, check thermal controls, replace it
faulty. Contact a competent person.
1. Check pressure from valve if greater than 2.1
bar replace. (See page 6 of installation manual).
2. As No2 of above.
3. Check and replace if faulty. (See page 6 of
installation manual).
Replace new batteries for wireless room
thermostat
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