Samsung MH020FPEA Service Manual page 175

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 - K2 : Function button
2. I
- K3 : Reset button - K4 : View mode change button
Key
K1
Push
Heat mode
1 Try-run
(Display: )
2 -
3 -
4 -
I K4 View mode Display changes
2.
Push Display Explanation
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 K3 K4
Refrigerant
Charging
(Display: )
Cool mode
Try-run
(Display: )
View mode
Reset
change
Pump down
(Display: )
Checking of
pipe connection
(Display: )
MH040FXEA2/MH052FXEA2/MH14✳✳2X/
MH16✳✳2X/MH18✳✳2X/MH19✳✳2X
Always Zero
AUTO
Addressing
1 2 3 4
MANUAL
Addressing
7 segment
LED
2digits x 2
K 1 K 2 K 3
SW02 SW01
Switch
(OFF)
DIS01 DIS02
Indoor unit
address
K 1 K 2 K 3
View data display
Outdoor PCB Display
Push Display Explanation
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
Samsung Electronics
Number of
indoor unit
K 4
Number of
indoor unit
K 4