Troubleshooting; The Items To Be Checked First Time - Samsung APH180HD Service Manual

5. Troubleshooting

Troubleshooting pro c e d u re s
1 • Check the items to check first time.
2 • Check the self-diagnostic mode and action method.
3 • Check in detail the troubled parts according to the sequence of "trouble shooting by the phenomena".

5-1 The items to be checked first time

1) Is proper the power voltage ?
The power voltage shall be of 187V-253V 50Hz.
2) Is the cable connected correctly between the indoor and outdoor unit?
The indoor and outdoor units shall be connected with 8wires including the gro u n d i n g .
Check whether the wires of indoor and outdoor units are connected with the correct wire no. and
terminal board no.
3) The phenomena in the following table is not related to the fault of air conditioner.
No Phenomena
1 - Heating operaation
The compressor does not operated even though the set
t e m p e r a t u re is set higher than the indoor temperature.
- Cooling operation
The compressor does not operated even though the set
t e m p e r a t u re is set lower than the indoor temperature .
- Fan speed is not adjusted durning the auto, dry, turbo
2
and long operation.
3
- The temperature is not adjusted durning the auto,
dry, turbo and long and fan operation.
4 - The compressor repeates the stop and start with the
interval of several minutes durning dry.
5 - Durning the heating operation, the lamp "on deice"
is on at the control panel and the compressor
oprates.
6 - Durning the heating, the outdoor unit fan motor
repeats start/stop or even the compressor repeats
the starts the start snd stop.
- Durning the heating, the compressor and outdoor
7
unit fan motor operate but indoor unit fan motor
does not operate.
Samsung Electronics
Description
- The operation of compressor is delayed for 3minutes for the
protection of compressor when it is off and on again.
- The compressor operates nomally after 3 minutes even the lnitial
power is on.
- The fan speed is automatically adjusted durning the auto, dry,
turo and long operation.
- The set temperature is automatically set durning the auto, dry
and long operation.
- The wind blow operation is the mode to circulate the indoor air.
- At the dry operation, the set temperature and the indoor
temperature are compared to adjust the compressor start/stop
time in order to dehumidify.
- The deice operation is being performed in order to melt the frost
by outdoor unit and its maximum time is 9 minutes.
- It is the function to prevent the overheating of the indoor
evapolator, where the temperature of indoor unit heat exchanger
reaches 52°C, the normal operation is done.
- This is the function to prevent the cooling air incoming to the
indoor, where the temperature of indoor evaporator reaches 27°C,
the indoor fan motor operates.
5-1