Troubleshooting - Samsung RC090MHXEA Installation Manual

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
EHS mono_RC＊＊＊MHXGA_IM_E_34411A(3).indd 55
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. Cylinder thermal cut-out has operated.
(Indirect units only).
6. 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. As at No.2
6. 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
Contact a
controls, replace it faulty.
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
2012-11-26 오후 3:02:06
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