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The following symptoms do not indicate malfunction.
Symptom Cause
Water flowing sound during operation. • Refrigerant flow inside the unit.
Operation is delayed a few minutes
after restarting.
• The delay is a protection for the compressor.
Outdoor unit emits water/steam. • Condensation or evaporation occurring in the pipes.
Steam comes out of the outdoor unit in
the heating mode.
• It is caused by defrost operation in the heat exchanger.
Outdoor unit does not operate. • It is caused by the protection control of the system when outdoor temperature is
out of the operating range.
System operation switches off. • It is caused by the protection control of the system. When the water inlet
temperature is lower than 10 °C, the compressor stops and the backup heater
power turns on.
System is hard to heat up. When the panel and the floor are heated simultaneously, warm water temperature
may decrease, which may reduce the heating ability of the system.
• When the outdoor air temperature is low, the system may need longer time to heat
up.
• Discharge outlet or intake inlet in the outdoor unit is blocked by some obstacle,
such as a pile of snow.
• When the preset water outlet temperature is low, the system may need longer time
to heat up.
System does not heat up instantly. • System will take some time to heat up the water if it starts to operate at cold water
temperature.
Backup heater is automatically turned
ON when it is disabled.
• It is caused by the protection control of the indoor unit heat exchanger.
Operation starts automatically when the
timer is not set.
• Sterilisation timer has been set.
Display power consumption remains
as previous value.
• Memory is saved on hourly basis. If a power failure occurs, the data kept from last
hour will be displayed.
• Total power consumption has reached 999 days. press
to reset the counter.
HEAT indicator blinks on the display. • System is performing deice operation.
Loud refrigerant noise continue for a
few minutes.
• It is caused by protection control during deice operation at outdoor ambient
temperature lower than -10°C.
*
1
Cool mode is unavailable. • System has locked to operate in HEAT mode only.
Check the following before calling for servicing.
Symptom Check
Operation in HEAT/
*
1
COOL mode is
not working efficiently.
• Set the temperature correctly.
• Close the panel heater/cooler valve.
• Clear any obstruction in the air inlet and air outlet vents of the outdoor unit.
Noisy during operation. • Outdoor unit or indoor unit has been installed at an incline.
• Close the front plate properly.
System does not work. • Circuit breaker has tripped/activated.
Operation LED is not lit or nothing is
displayed on the control panel.
• Check that the power supply is working correctly, or that a power failure has not
occurred.
Troubleshooting
Force Heater Mode Button
• If a malfunction occurs in the system, the backup heater may be used to heat up the water.
Press to switch on the backup heater.
• Press
to switch off the backup heater.
• In the Force Heater mode, no other operation can be used.
*
1
The system is locked to operate without COOL mode. It can be unlocked only by authorised installers or our authorised service partners.
*
2
Only displayed when COOL mode is unlocked (Means when COOL mode is available).
Cleaning instructions / Troubleshooting
F569727_SS0814-1.indb 13F569727_SS0814-1.indb 13 21/08/2014 10:54:19 AM21/08/2014 10:54:19 AM
Process BlackProcess Black
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