48
Troubleshooting
FAULT
POSSIBLE CAUSE
REMEDY
No water flow from hot taps.
1. Mains supply off.
2. Strainer blocked.
3. Cold water inlet Pressure Reducing
Valve incorrectly fitted.
1. Check and open stopcock.
2. Turn off water supply. Remove strainer and
clean.
3. Check and refit as required.
Water from hot taps is cold.
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. Check and switch on.
2. Check and reset button.
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.
Intermittent water discharge
1. Reduced internal expansion.
2. Thermal control failure. (Note Water will
be hot).
1. Repressurize expansion vessel. Follow cold
water discharge.
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.
Continuous water discharge
1. Cold water inlet Pressure Reducing
Valve not working
2. Temperature and pressure relief valve
faulty.
3. Expansion relief valve not working
correctly.
1. Check pressure from valve if greater than 2.1
bar replace.
2. As No2 of above.
3. Check and replace if faulty.
Room thermostat does not switch
on or not work properly
Wireless room thermostat batteries not
Working
Replace new batteries for wireless room
thermostat
t
Disconnect electrical supply before removing any electrical equipment covers.
NOTE
