Delta PG-35 Service Manual Page 66
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- TROUBLESHOOTING
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12-7
TROUBLESHOOTING
SM DELTA 1-E.2 GB
12.5.2 Checking Power Input.
If Indoor unit power LED is unlighted, power down the system and check
the fuse of the Indoor unit. If the fuse is OK replace the Indoor unit
controller. If the fuse has blown, replace the fuse and power up again.
Checking Power Input procedure for the Outdoor unit is the same as with
the Indoor unit.
12.5.3 Checking the Outdoor Fan Motor.
Enter Test Mode (where the OFAN speed is high)
Check the voltage between lead wires according to the normal value
as following:
Between red wire and black wire: 310VDC +/- 20V
Between orange wire and black wire: 15VDC +/- 1V
Between yellow wire and black wire: 2-6VDC
12.5.4 Checking the Compressor.
The compressor is brushless permanence magnetic DC motor. Three
coil resistance is same. Check the resistance between three poles.
The normal value should be below 0.5 ohm (TBD).
12.5.5 Checking the Reverse Valve (RV).
Running in heating mode, check the voltage between two pins of
reverse valve connector, normal voltage is 220VAC.
12.5.6 Checking the electrical expansion valve (EEV).
The EEV has two parts, drive part and valve. The drive part is a step motor; it is
ringed on the valve. Check the drive voltage (12VDC). When Outdoor unit is
power on, EEV shall run and have click and vibration.
12.6 Precaution, Advise and Notice Items
12.6.1 High voltage in Outdoor unit controller.
Whole controller, including the wires that are connected to the Outdoor unit
controller may have the potential hazard voltage when power is on. Touching
the Outdoor unit controller may cause an electrical shock.
Advise: Don’t touch the naked lead wire and don’t insert finger,
conductor or anything else into the controller when power is on.
12.6.2 Charged Capacitors
Three large-capacity electrolytic capacitors are used in the Outdoor
unit controller. Therefore, charging voltage (380VDC) remains after
power down. Discharging takes about four minutes after power is off.
Touching the Outdoor unit controller before discharging may cause an
electrical shock.
12.6.3 Additional advises
When disassemble the controller or the front panel, turn off the power
supply.
When connecting or disconnecting the connectors on the PCB, hold the
whole housing, don’t pull the wire.
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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