Checking And Testing Operations - Samsung MH020FPEA Service Manual

12-2 Checking and Testing operations

To complete the installation, perform the following checks and tests to ensure that the air conditioner is operating
correctly.
1. Review all the following elements in the installation:
1. • Installation site strength
1. • Piping connection tightness not to leak any gas
1. • Connection wiring
1. • Heat-resistant insulation of the piping
1. • Drainage
1. • Earthing wire connection
1. • Setting number of the indoor unit installed (Outdoor unit SW)
1. • Addressing mode (AUTO or MANUAL)
1. • Address number on each indoor unit (Manual addressing mode)
1. • Correct operation for checking connection (follow the step below)
I Key Options of PCB Display
2.
2. I
- K1 : Test button
2. I
- K3 : Reset button
Key
K1
Push
Heat mode
1 Try-run
(Display:
2 -
-
3
4 -
I K4 View mode Display changes
2.
Push
0 Present Compressor Frequency
1 Target Compressor Frequency
2 Order Compressor Frequency
3 EEV0 current step
4 EEV1 current step
5
EEV2 current step
EEV3 current step
6
12-2 12-2
- K2 : Function button
- K4 : View mode change button
K2 K3
Refrigerant
Charging
)
(Display: )
Cool mode
Try-run
(Display: )
Reset
Pump down
(Display: )
Checking of
pipe connection
(Display: )
Display Explanation
MH040FXEA2/MH052FXEA2/MH14✳✳2X/
MH16✳✳2X/MH18✳✳2X/MH19✳✳2X
Always Zero
AUTO
Addressing
MANUAL
Addressing
7 segment
2digits x 2
K4
Switch
Indoor unit
address
View mode
change
Push
7 Fan RPM (H: high, L: low, Blank: off)
8 Discharge temperature
9 OLP temperature
10 Condenser temperature
11 Outdoor temperature
12 Primary current
13 Target Discharge temperature
14 Total capacity of the indoor units
15 Safety control code
1 2 3 4
LED
K 1 K 2 K 3 K 4
SW02 SW01
(OFF)
DIS01 DIS02
K 1 K 2 K 3 K 4
View data display
Outdoor PCB Display
Display Explanation
Samsung Electronics
Number of
indoor unit
Number of
indoor unit