Samsung AVXCSH022EE, Service Manual

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Troubleshooting
Samsung Electronics 4-60
Q
Compressor Pretreatment display
1. Once the tracking is completed, check the compressor temperature before entering the system operation to determine whether the
operation can be started right away. At this time, Ch will flash on the display module.
2. If the condition is satisfied to operate the compressor after judgment, Ch will stop flashing and the address of the indoor unit with
which the outdoor unit is trying to communicate will be displayed on the left display module. On the display module to the right, the
address of the indoor unit which answered the communication will be displayed.
3. If the condition is not satisfied for operating the compressor right away, Ch will continue to blink on the display module and CCH (crank
case heater) will heat the compressor for 2 and a half hours.
The compressor cannot be operated during this time, and it will be ready for operation once the compressor is sufficiently preheated
for 2 and a half hours and the Ch stops flashing.
4. The judgment of whether it is possible to operate according to the temperature of the compressor is only executed once. If the test
operation is carried after the first installation, then input the power six hours before the test operation.
No
Yes
Judgment whether operation is possible
System power input
Tracking completed
The left display module displays the
address of the indoor units that are
attempting communication, and the right
module displays the address of the
indoor units responded to
the communication.
CH Flashing Stopped
CH flashing starts
Preheating for a maximum 2 hours
and 30 minutes
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