Testing Operation - Samsung Electronics DVM Series Technical Manual

. Installation

10. Testing operation

Cautions for operation
Put the power 6 hours before initial operation so that the crank case heater may warm the compressor.
When restarting the unit after main power off, start the operation 2 and half hours after power on.
If the heater is not on, the operation can not be started for 2 hours after power on for
the protection of compressor. (
(1) Check the power between outdoor unit and distribution board.
(3 phase tester recommended)
Compressor power : L1(R) L2(S) L3(T) - red white black (Care must be taken so that the color and phasing may not be changed.)
220V power: L / N
(2) Check the indoor unit
Check whether the power source of each indoor unit and the communication cables are correctly connected.
(Communication cable marked as F1, F2)
- If the communication cable is wired as the power cable, it might cause major damage to PCB.
- There is no color marking on the power supply cable but be sure to check the color of communication cable
since the cable has polarity (+ and -).
Check whether the addresses are correctly assigned to each indoor unit.
- The address switch is available from "0".
- The address of each indoor unit shall be assigned differently, eg. 1, 2, 3, etc.
Check whether the connections for temperature sensor, electronic expansion valve and drain pumps are all connected.
(3) Check the outdoor unit
Set the numbers of indoor unit on the outdoor unit PCB.
- If there are 3 outdoor units, set so that the arrow mark is shown on "3".
Check on the outdoor unit PCB whether the outdoor unit capacity code and Dip switch are correct.
(It is delivered with the setting in factory and so there is not necessary to alter).
(4) Once the check of power supply, indoor and outdoor unit is completed, connect
to the outdoor unit the PC in which the A/S program is installed, and then connect
power of the outdoor unit.
(5) Once the power is on to the outdoor unit, the outdoor performs tracking to
check the connections to the indoor units and options.
- At the time the left side of outdoor unit PCB display part shows the detection of communication response with 0 - F
address and if there is the response, the address of indoor unit responding displays on the right side display.
(6) Once tracking(approximately 20 seconds) is completed, the unit checks that
the numbers of indoor units set in PCB and those responding through communication,
are the same, but if they are not the same, E2 Error displays on the PCB display.
- For E2 error, check whether the indoor unit set switch on PCB is correct or whether the installation and
address setting is correct if there is an indoor unit not responding.
- Press Key3 after check and retry the Tracking.
(7) If Ch displays on the PCB display after tracking, the compressor is not
preheated, which means the operation is only possible after 2 and half hours.
(Supply power and preheat the compressor).
displays on the PCB display.)
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