Electra OU7-24 RC Service Manual Page 93
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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12-2
TROUBLESHOOTING
Revision Y06-02 Service Manual - KN Series
ATTENTION : check for broken or loose cable lugs first
NO SYMPTON PROBABLE CAUSE CORRECTIVE ACTION
9. Only indoor fan and
compressor working.
Outdoor fan blocked. - Remove obstructions.
10. Only indoor fan
working.
-Run capacitor of outdoor
fan motor faulty.
-Windings of outdoor fan
are shorted.
- Replace capacitor.
-Replace motor.
11. No cooling or heating
takes place, indoor
and outdoor fans
working.
- Overload safety device on
compressor is cut out (low
voltage or high
temperature)
- Compressor run capacitor
faulty.
- Compressor windings are
shorted.
- Check for proper voltage, switch off power
and try
again after one hour.
- Replace compressor capacitor.
- Replace compressor.
12.No air supply at
indoor unit,
compressor
operates.
-Indoor fan motor is blocked
or turns slowly.
-indoor fan run capacitor
faulty.
- motor windings are
shorted.
- Check voltage,repair wiring if necessary.
-Check fan wheel if it is tight enough on
motor shaft,tighten if necessary.
-Replace indoor fan motor.
13. Partial, limited air
supply at indoor
indoor unit.
Lack of refrigerant (will
accompanied by whisteling
noise) cause ice forma
tion
on indoor unit coil in cooling
mode.
-Charge the unit after localizing leak.
14. Water accumulates
and overflow from
indoor unit section.
Drain tube or spout of drain
pan clogged.
-Disasemble plastic drain tube from spout of
indoor unit drain pan.
15. Water dripping from
outdoor unit base.
(in heating mode)
Water drain outlet is
clogged.
-Open outdoor unit cover clean out water
outlet ,clean the base inside througly.
16.
Freeze-up of outdoor
coil in heating mode,
poor heating effect in
room, indoor fa
n
operates.
-Faulty outdoor thermistor.
-Faulty control cable.
- Outdoor temperature is
too low (below -10°C)
-Outdoor unit air outlet is
blocked.
-Replace thermistor.
- Repair control cable.
- Shut unit off, outdoor temp. is below design
conditions and cannot function properly.
-Remove obstructions.
CONTENT
- KN Cassette R410A Series 1
- LIST OF EFFECTIVE PAGES 2
- Table of Contents 3
- 1. INTRODUCTION 4
- 1.6 Outdoor Unit 5
- 1.7 Tubing Connections 5
- 1.8 Accessories 5
- 1.9 Inbox Documentation 5
- 1.10 Matching Table 6
- 2. PRODUCT DATA SHEET 7
- 2.2 KN 24 / OU7-24T R410A 8
- 2.3 KN 30 / OU8-30 R410A 9
- 2.4 KN 30 / OU8-30T R410A 10
- 2.5 KN 36 / OU10-36 R410A 11
- OUTDOOR 11
- PRODUCT DATA SHEET 12
- 3. RATING CONDITIONS 14
- 4. OUTLINE DIMENSIONS 15
- 4.2 Outdoor Unit: OU7-24 16
- 4.3 Outdoor Unit: OU8-30 16
- OUTLINE DIMENSIONS 17
- 5. PERFORMANCE DATA 18
- 5.2.1 Heating 19
- 5.3.1 Cooling 20
- 5.3.2 Heating 21
- 5.4 KN30 / OU8-30 R410A 22
- 5.5.1 Heating 23
- 5.6 KN30 / OU8-30T R410A 24
- 5.7.1 Heating 25
- 5.8 Pressure Curves 26
- 5.8.2 Heating 27
- 5.9 Pressure Curves 28
- -10 -5 0 5 10 15 20 29
- 5.9 KN36 / OU10-36 R410A 30
- 5.10.1 Heating 31
- 5.11 Pressure Curves 32
- 5.12 KN36 / OU10-36T R410A 34
- 5.13.1 Heating 35
- 5.14 Pressure Curves 36
- 5.14.2 Heating: 37
- 5.15 KN45 / OU10-47T R410A 38
- 5.16.1 Heating 39
- 5.17 Pressure Curves 40
- 5.17.2 Heating 41
- 6. ELECTRICAL DATA 42
- ELECTRICAL DATA 43
- 7. WIRING DIAGRAMS 44
- WIRING DIAGRAMS 45
- 7.6 Outdoor Unit: OU10-36 46
- 7.7 Outdoor Unit: OU10-36T 47
- 7.8 Outdoor Unit: OU10-47T 47
- 8. ELECTRICAL CONNECTIONS 48
- 9. REFRIGERATION DIAGRAMS 49
- 9.1.2 KN 30 R410A 50
- REFRIGERATION DIAGRAMS 51
- 9.1.3 KN 36 R410A 51
- 9.1.4 KN 36T R410A 52
- 9.1.5 KN 45T R410A 53
- 9.2 Cooling Only Models 54
- 10. TUBING CONNECTIONS 55
- ¼” ⅜” ½” ⅝” ¾” 55
- 11. CONTROL SYSTEM 56
- CONTROL SYSTEM 57
- 11.2 Control Function 59
- 11.3 General Functions 60
- 11.3.5 Protections 61
- 11.3.6 Thermistors Operation 61
- 11.3.7 RV Fault 62
- 11.3.8 General Features 62
- 11.4 Cooling Mode 63
- 11.4.3 Sequence Diagrams 64
- (RT - SPT) [ 65
- 11.5 Heating Mode 66
- 50)2( tt ICTandSPTRT 68
- 11.6 Heating, RC or SH Group 69
- 11.7.1 Sequence Diagram 70
- 11.8 Heating, RH Group 71
- 11.10.2 Sequence Diagrams 74
- 11.11 Dry Mode 75
- 11.11.2 DRY, SH or RH group 77
- 11.12 Protection 78
- Time [Hr] 85
- 11.16 System Diagnostics 91
- 12. TROUBLESHOOTING 92
- TROUBLESHOOTING 93
- 13.5 Indoor Unit: KN 36 98
- 13.6 Indoor Unit: KN 45 99
- *Optional 102
- 14. OPTIONAL ACCESSORIES 130
- Service Manual - KN Series 132
- OPTIONAL ACCESSORIES 132
- Revision Y06-02 132
- APPENDIX A 136
- CONTENTS 137
- INSTALLATION 138
- NAMES AND FUNCTIONS 140
- OPERATION ATTENTION 141
- TEMPORARY OPERATIONS 142
- ADJUSTING AIR FLOW DIRECTION 142
- MAINTENANCE 143
- RESTART AFTER A LONG TIME 145
- TROUBLES AND CAUSES 146
- REPARATION 147
- PRECAUTION 149
- INSTALLATION INFORMATION 150
- ATTACHED FITTINGS 151
- INSTALLATION PLACE 152
- INDOOR UNIT INSTALLATION 153
- CAUTIONS 154
- OUTDOOR UNIT INSTALLATION 156
- INSTALL THE CONNECTING PIPE 157
- Flaring the nuts 158
- Use the market brass pipe 158
- Operate the stop valves 160
- CHECK THE LEAKAGE 160
- CONNECT THE DRAIN PIPE 161
- WIRING 163
- 3. ELECTRICAL CONNECTIONS 164
- Figure 36: Three Phase Units 165
- 3.2 Interconnecting cable 165
- Chart 38 167
- TEST OPERATION 168
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