Samsung MH020FPEA, Service Manual

Page: 175 / 208

Samsung Electronics 12-2 12-2
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)
2.
■
Key Options of PCB Display
2.
■
- K1 : Test button - K2 : Function button
2.
■
- K3 : Reset button - K4 : View mode change button
2.
■
K4 View mode Display changes
12-2 Checking and Testing operations
K 1
1 2 3 4
K 2 K 3 K 4
Number of
indoor unit
Number of
indoor unit
AUTO
Addressing
MANUAL
Addressing
7 segment
LED
2digits x 2
Push
Key
K1
K2 K3 K4
1
Heat mode
Try-run
(Display: )
Reset
View mode
change
2 -
3 -
4 -
Refrigerant
Charging
(Display: )
Cool mode
Try-run
(Display: )
Pump down
(Display: )
Checking of
pipe connection
(Display: )
K 1 K 2 K 3
(OFF)
DIS01
SW02 SW01
K 4
DIS02
Outdoor PCB Display
Indoor unit
address
View data display
Display Explanation Display Explanation Push Push
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Present Compressor Frequency
Target Compressor Frequency
Order Compressor Frequency
EEV0 current step
EEV1 current step
EEV3 current step
Fan RPM (H: high, L: low, Blank: off)
Discharge temperature
OLP temperature
Condenser temperature
Outdoor temperature
Primary current
Target Discharge temperature
Total capacity of the indoor units
Safety control code
MH040FXEA2/MH052FXEA2/MH14
✳✳
2X/
MH16
✳✳
2X/MH18
✳✳
2X/MH19
✳✳
2X
Always Zero
Switch
EEV2 current step
24296A(1)_2 11/11/05 5:07 PM Page 12-2