Delta PG-35 Service Manual Page 60
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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12-1
TROUBLESHOOTING
SM DELTA 1-E.2 GB
12. TROUBLESHOOTING
WARNING!!!
When Power Up – the whole outdoor unit controller, including the wiring, is
under HIGH VOLTAGE!!!
Never open the Outdoor unit before turning off the Power!!!
When turned off, the system is still charged (400V)!!!
It takes about 4 Min. to discharge the system.
Touching the controller before discharging may cause an electrical shock!!!
12.1
Single Split system failures and corrective
actions
No SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION
1
Power supply indicator
(Red LED) does not light
up.
No power supply
Check power supply. If power supply
is OK, check display and display
wiring. if OK, replace controller.
2
Unit does not respond to
remote control message Remote control message
not reached the indoor
unit
Check remote control batteries, if
batteries are OK, check display and
display wiring, if OK, replace display
PCB.
If still not OK replace controller.
3
Unit responds to remote
control message but
Operate indicator (Green
LED) does not light up
Problem with display
PCB
Replace display PCB.
If still not OK replace controller.
Unit in heat mode and
coil is still not warm.
Change to cool mode and check.
4
Indoor fan does not start
(louvers are opened and
Green LED does light up)
Problem with PCB or
capacitor
Change to high speed and Check
power supply to motor is higher than
130VAC (for triack controlled motor)
or higher than 220VAC for fixed
speed motors, if OK replace
capacitor, if not replace controller
5
Indoor fan works when
unit is OFF, and indoor
fan speed is not changed
by remote control
command.
PCB problem
Replace controller
6
Compressor does not
start
Electronics control
problem or protection
Perform diagnostics , and follow the
actions described.
7
Compressor stops during
operation and Green
LED remains on
Electronic control or
power supply problem
Perform diagnostics ,and follow the
actions described.
8
Compressor is on but
outdoor fan does not
work
Problem with outdoor
electronics or outdoor fan
Check outdoor fan motor according
to the procedure in section, if not OK
replace controller
CONTENT
- Delta DCI Series 1
- LIST OF EFFECTIVE PAGES 2
- Table of Contents 3
- 1. INTRODUCTION 4
- 1.3 Indoor Unit 5
- 1.4 Filtration 5
- 1.5 Control 5
- 1.6 Outdoor Unit 5
- 1.7 Tubing Connections 6
- 1.8 Inbox Documentation 6
- 1.9 Matching Table 6
- 2. PRODUCT DATA SHEET 7
- PRODUCT DATA SHEET 10
- SM DELTA 1-E.2 GB 10
- 3. RATING CONDITIONS 11
- 4. OUTLINE DIMENSIONS 12
- OUTLINE DIMENSIONS 13
- 4.5 Outdoor Unit: DCR 50 DCI 14
- 5. PERFORMANCE DATA 15
- Capacity Ration 16
- 5.2 Delta 25 DCI 17
- 5.3 Delta 35 DCI 19
- 5.4 Delta 50 DCI 21
- 5.5.3 Delta 25 DCI : Cooling 24
- 5.5.4 Heating 24
- 5.5.5 Delta 35 DCI : Cooling 25
- 5.5.6 Heating 25
- 5.5.7 Delta 50 DCI : Cooling 26
- 5.5.8 Heating 26
- 5.6.2 Heating – Test Mode 28
- 5.6.4 Heating – Test Mode 30
- Outdoor DB Temperature [ºC] 31
- Suction Pressure [kPa] 31
- -15 -10 -5 0 5 10 15 32
- Outdoor WB Temperature[ºC] 32
- Discharge Pressure [kPa] 32
- 22/15 DB /WB 33
- 24/17 DB /WB 33
- 27/19 DB /WB 33
- 29/21 DB /WB 33
- 32/23 DB /WB 33
- 5.6.8 Heating – Test Mode 34
- 6.1 Sound Pressure Level 35
- Delta 35 Delta 50 36
- 6.3 Outdoor units 37
- 7. ELECTRICAL DATA 39
- WIRING DIAGRAMS 40
- BCP rellortnoc tinu roodtuO 41
- MARGAID TIUCRIC TINU ROODTUO 41
- 9. REFRIGERATION DIAGRAMS 42
- REFRIGERATION DIAGRAMS 43
- 9.1.3 Delta 50 / DCR 50 DCI 44
- 10. TUBING CONNECTIONS 45
- ¼” ⅜” ½” ⅝” ¾” 45
- 11. CONTROL SYSTEM 46
- CONTROL SYSTEM 47
- 3 Degrees 48
- 11.2 Fan Mode 49
- 11.3 Cool Mode 49
- 11.4 Heat Mode 49
- ICTVL ICTT ICTHICTL 50
- Deicing Protection Procedure 53
- STBY/OPER 54
- 11.11 Test Mode 56
- 11.12 SW Parameters 57
- 12. TROUBLESHOOTING 60
- TROUBLESHOOTING 61
- DCR50 diagnostics: 64
- 12.4 Judgment by MegaTool 65
- 12.5.2 Checking Power Input 66
- 12.6.3 Additional advises 66
- No. Part No. Name Quan 68
- APPENDIX A 78
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