Troubles And Causes - Sinclair SDV5 User Manual

Explanation of heating operation
●
It may take longer to reach the set temperature for general
heating operation than for cooling operation.
The following operation is performed in order to prevent the
heating capacity from dropping or cold air from blowing
● Defrost operation
a)
When the system is running in heating mode, the outdoor unit
may frost in low ambient temperature. To increase efficiency,
the unit will start defrosting automatically (after 2-10 minutes),
and then water will drained out from the outdoor unit.
In order to prevent cold air from blowing out of an indoor unit
b)
at the start of heating operation, the indoor fan is automatical-
ly stopped. It may take some time before the fan starts. This is
not a malfunction.
Protection mode
● In protection mode the system will stop automatically and the
outdoor main PCB will display the specified protection code. If
the unit displays protection or error code, contact your dealer for
servicing and maintenance.
●
Error
When the system has error, the system will stop automatically
and the outdoor main PCB will display the specified error code. If
the unit displays protection or error code, contact your dealer for
servicing and maintenance.
Please switch off the power supply when protection or error
occurs. Do not restart until the problems are solved.
Operation range
Use the system in the following temperature and humidity ranges
for safe and effective operation.
Temperature
Outdoor
temperature
Mode
Cooling mode
-5°C ~ 48°C
Heating mode -23°C ~ 24°C
The temperature should below 55°C during transporing
The protection function may occur if the unit operates beyond
above conditions, the unit will stop running.
NOTE
Indoor room's
Indoor
relative
temperature
humidity
Room
17°C ~ 32°C below 80%
15°C ~ 30°C
NOTE

4. TROUBLES AND CAUSES

This unit should only be serviced and maintained by a
professional air conditioning service engineer. Incorrect
servicing or maintenance can cause electric shock, fire or
leakage of water. If the unit displays protection or error code,
contact your dealer for servicing and maintenance.
Please read following information before asking for maintenance.
4.1 Symptoms that are not air conditioner troubles
Symptom 1: Outdoor unit makes a hiss noise
●
A slight hiss noise is caused by the heat-expansion and
cold-contraction of the heat exchanger as the temperature
changes.
●
At the beginning or end of the defrosting process, a slight
hiss noise is caused by the four-way valve action.
●
At the beginning or end of the running process, a sound
like water flowing in the valve occurs, which will be
amplified after 3-15 minutes. This sound may be caused by
refrigerant flow or discharge the drain water.
Symptom 2: Outdoor unit heat exchanger discharge mist or water
Outdoor unit is defrosting.
●
Symptom 3: Indoor unit emit foreign smell
●
The foreign smell is from indoor furniture, cigarettes or
cosmetics which adhere to the unit.
Symptom 4: Indoor unit operation indicator flash
●
Power supply resumes after an abnormal power off
Table.3-1
●
In mode conflict
●
Fan stops to prevent sending cold air
Symptom 5: Automatically start-up or stop
Timer setting is activated.
●
Symptom 6: System does not operate
●
Power supply is off
●
Power manual switch is off
●
Fuse is blown
●
Timer setting time is activated
Symptom 7: Insufficient cooling or heating capacity
●
Dirty heat exchanger
●
Unit inlet, outlet or filter is blocked
●
Fan speed is low
●
In fan only mode
●
Temperature setting is not suitable
3
CAUTION