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40MAHB: Service Manual

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

37

APPENDICIES

Appendix 1

Table 8 — Temperature Sensor Resistance Value Table for T1, T2, T3, T4 (C--K)

°

C

°

F

K  Ohm

°

C

°

F

K  Ohm

°

C

°

F

K  Ohm

°

C

°

F

K  Ohm

-20

-4

115.266

20

68

12.6431

60

140

2.35774

100

212

0.62973

-19

-2

108.146

21

70

12.0561

61

142

2.27249

101

214

0.61148

-18

0

101.517

22

72

11.5

62

144

2.19073

102

216

0.59386

-17

1

96.3423

23

73

10.9731

63

145

2.11241

103

217

0.57683

-16

3

89.5865

24

75

10.4736

64

147

2.03732

104

219

0.56038

-15

5

84.219

25

77

10

65

149

1.96532

105

221

0.54448

-14

7

79.311

26

79

9.55074

66

151

1.89627

106

223

0.52912

-13

9

74.536

27

81

9.12445

67

153

1.83003

107

225

0.51426

-12

10

70.1698

28

82

8.71983

68

154

1.76647

108

226

0.49989

-11

12

66.0898

29

84

8.33566

69

156

1.70547

109

228

0.486

-10

14

62.2756

30

86

7.97078

70

158

1.64691

110

230

0.47256

-9

16

58.7079

31

88

7.62411

71

160

1.59068

111

232

0.45957

-8

18

56.3694

32

90

7.29464

72

162

1.53668

112

234

0.44699

-7

19

52.2438

33

91

6.98142

73

163

1.48481

113

235

0.43482

-6

21

49.3161

34

93

6.68355

74

165

1.43498

114

237

0.42304

-5

23

46.5725

35

95

6.40021

75

167

1.38703

115

239

0.41164

-4

25

44

36

97

6.13059

76

169

1.34105

116

241

0.4006

-3

27

41.5878

37

99

5.87359

77

171

1.29078

117

243

0.38991

-2

28

39.8239

38

100

5.62961

78

172

1.25423

118

244

0.37956

-1

30

37.1988

39

102

5.39689

79

174

1.2133

119

246

0.36954

0

32

35.2024

40

104

5.17519

80

176

1.17393

120

248

0.35982

1

34

33.3269

41

106

4.96392

81

178

1.13604

121

250

0.35042

2

36

31.5635

42

108

4.76253

82

180

1.09958

122

252

0.3413

3

37

29.9058

43

109

4.5705

83

181

1.06448

123

253

0.33246

4

39

28.3459

44

111

4.38736

84

183

1.03069

124

255

0.3239

5

41

26.8778

45

113

4.21263

85

185

0.99815

125

257

0.31559

6

43

25.4954

46

115

4.04589

86

187

0.96681

126

259

0.30754

7

45

24.1932

47

117

3.88673

87

189

0.93662

127

261

0.29974

8

46

22.5662

48

118

3.73476

88

190

0.90753

128

262

0.29216

9

48

21.8094

49

120

3.58962

89

192

0.8795

129

264

0.28482

10

50

20.7184

50

122

3.45097

90

194

0.85248

130

266

0.2777

11

52

19.6891

51

124

3.31847

91

196

0.82643

131

268

0.27078

12

54

18.7177

52

126

3.19183

92

198

0.80132

132

270

0.26408

13

55

17.8005

53

127

3.07075

93

199

0.77709

133

271

0.25757

14

57

16.9341

54

129

2.95896

94

201

0.75373

134

273

0.25125

15

59

16.1156

55

131

2.84421

95

203

0.73119

135

275

0.24512

16

61

15.3418

56

133

2.73823

96

205

0.70944

136

277

0.23916

17

63

14.6181

57

135

2.63682

97

207

0.68844

137

279

0.23338

18

64

13.918

58

136

2.53973

98

208

0.66818

138

280

0.22776

19

66

13.2631

59

138

2.44677

99

210

0.64862

139

282

0.22231

Summary of Contents for 40MAHB Series

Page 1: ...serious hazards which will result in severe personal injury or death WARNING signifies hazards which could result in personal injury or death CAUTION is used to identify unsafe practices which may res...

Page 2: ...H B Q 36 A 3 40 INDOOR UNIT MA MODEL VOLTAGE 1 115 1 60 3 208 230 1 60 INDOOR UNIT FAN COIL UNIT TYPE H HIGH WALL INDOOR FAN COIL TYPE Q HEAT PUMP NOMINAL CAPACITY 06 1 2 TON 09 3 4 TON 12 1 TON 18 1...

Page 3: ...terminal Refer to the CONNECTION DIAGRAMS on page 4 for 115 volt or 208 230 volt connection If installed in a high electromagnetic field area EMF and communication issues exist a 14 2 stranded shield...

Page 4: ...g 1 Connection Diagram 12K 115V Fig 2 Connection Diagram 6K 18K 208 230 1 60 Fig 3 Connection Diagram 24K 36K 208 230 1 60 NOTES 1 Do not use thermostat wire for any connection between indoor and outd...

Page 5: ...AHB Service Manual Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations 5 WIRING DIAGRAM Fig 4 Wiring Diagram All Sizes 115 and 208 2...

Page 6: ...tice and without obligations 6 REFRIGERATION CYCLE DIAGRAM Fig 5 Refrigeration Cycle Diagram REFRIGERANT LINES IMPORTANT Both refrigerant lines must be insulated separately Refer to the outdoor unit s...

Page 7: ...ZKFP 58 8 1 6 ZKFP 58 8 1 6 Volts V 115 208 230 208 230 208 230 208 230 208 230 208 230 208 230 Phase 1 1 1 1 1 1 1 1 FLA 0 2 0 25 0 25 0 25 0 13 0 5 0 5 0 5 MCA 0 25 0 31 0 31 0 31 0 16 0 63 0 63 0...

Page 8: ...method is the most effective way of assuring a system is free of air and liquid water see Fig 8 Fig 8 Deep Vacuum Graph Triple Evacuation Method Refer to Fig 9 and proceed as follows 1 Pump the system...

Page 9: ...connection If only one temperature sensor malfunctions the air conditioner continues to work however the error code appears on the LED in the event of any emergency use If more than one temperature se...

Page 10: ...e indoor unit defrost lamp illuminates and appears Evaporator Coil Temperature Protection Fig 15 Evaporator Coil Temperature Protection When the evaporator temperature is higher than the setting prote...

Page 11: ...s in the COOLING mode for 30 minutes and turns to the AUTO mode at the 75 2 F 24 C setting temperature If the air conditioner is off before the power turns off and the air conditioner is required to s...

Page 12: ...the digital code Press OK to send as well Table 3 Inquiry Codes and Symbols To exit the Inquiry Mode Press and hold together the On Off and Fan buttons for 2 seconds CODE INQUIRY SYMBOL DESCRIPTION C...

Page 13: ...is shut off NOTE Remember to discharge the electricity power in capacitor Fig 18 Electrolytic Capacitors For other models please connect discharge resistance approximately 100 40W or a soldering iron...

Page 14: ...or 2 OFF EL 01 Indoor outdoor unit communication error 3 OFF EH 02 Zero crossing signal detection error 4 OFF EH 03 Indoor fan operating outside of the normal range 5 OFF EC 51 Outdoor unit EEPROM par...

Page 15: ...RED IU DISPLAY SOLUTION 1 IPM malfunction or IGBT over strong current protection X P0 Page 28 2 Over voltage or too low voltage protection O O P1 Page 31 3 EEPROM parameter error O E5 Page 16 4 Invert...

Page 16: ...ameter Error or Compressor Driven Chip EEPROM Parameter Error EC51 Description Outdoor PCB main chip does not receive feedback from the EEPROM chip or the compressor driven chip Recommended parts to r...

Page 17: ...ng connection from indoor terminal to indoor PCB Are they OK Turn on the unit check if W and 1 L are connected Check that the power LED is on No Yes Yes Unplug all the high voltage components connecte...

Page 18: ...while the black pin is for 3 port or N or S port the unit is running normal the voltage is moving alternately as positive values and negative values If the outdoor unit malfunctions the voltage remai...

Page 19: ...crossing signal feedback for 4 minutes or the zero crossing signal time interval is abnormal Recommended parts to repair Connection wires Indoor main PCB Troubleshooting Note Zero crossing detection e...

Page 20: ...the unit turns off Recommended parts to repair Connection wires Indoor main PCB Fan assembly Indoor main PCB Troubleshooting YES Turn the power off Wait 2 minutes then restart Is it within normal para...

Page 21: ...otor Outdoor main PCB Troubleshooting NOTE For certain models outdoor PCB could not be removed separately In this case the outdoor electric control box should be replaced as a whole YES Power off Afte...

Page 22: ...herwise proceed to step 2 2 Power on the unit and when the unit is in standby measure the pin4 5 voltage in the feedback signal connector If the value is not 5V change the PCB Otherwise proceed to ste...

Page 23: ...is lower than 0 06V or higher than 4 94V the LED displays the failure code Recommended parts to repair Connection wires Sensors Indoor main PCB Troubleshooting Fig 21 Test NOTE Figure 21 and the valu...

Page 24: ...onnection wires Sensors outdoor main PCB Troubleshooting Fig 22 Test NOTE For certain model the outdoor PCB could not be removed separately In this case the outdoor electric control box should be repl...

Page 25: ...than 50Hz however it does not maintain for a minimum of three minutes and this issue occurs 3 times the LED displays the failure code and the unit turns off Recommended parts to repair T2 Sensor Indo...

Page 26: ...r PCB does not receive feedback from the display board Recommended parts to repair Communication wire Indoor PCB Display board Troubleshooting Is it still displaying the error code The unit functions...

Page 27: ...the power wiring Are the L and N wired properly Reconnect L and N Replace the outoor main PCB Is the voltage between L and N normal Is the current normal Power on and measure the voltage between P an...

Page 28: ...tdoor PCB Troubleshooting YES NO Is the IPM terminal resistance uniform NO YES Please refer to the Fan Speed is operating outside of normal range malfunction NO YES YES NO YES NO Check the wiring betw...

Page 29: ...ectrolytic capacitors and ensure all the energy storage has been discharge 3 Disassemble the outdoor PCB or disassemble the IPM board 4 Measure the resistance value between P and U V W N U V W and N F...

Page 30: ...ut notice and without obligations 30 DIAGNOSIS AND SOLUTION CONT Compressor Check Disconnect the compressor and check the resistance between U V V W and U W and all 3 values should be equal If not the...

Page 31: ...o repair Power supply wires IPM module board PCB Reactor Troubleshooting Check the power supply Is it in working order Turn off the unit NO Check the connections and wires YES Are they in working orde...

Page 32: ...blockages Troubleshooting NOTE For certain models the outdoor PCB can not be removed separately In this case the outdoor electric control box should be replaced as a whole Check if the air flow system...

Page 33: ...e protector broken Check if the outdoor unit ventilation is good Ensure that the outdoor unit s ventiliation is functioning properly High pressure protection Connect the high pressure switch and main...

Page 34: ...connect the low pressure protector and the main control board Is the low pressure protector broken Method Disconnect the plug Measure the low pressure protector resistance If the protector is normal t...

Page 35: ...mmended parts to repair Connection wires IPM module board Outdoor fan assembly Compressor Outdoor PCB Troubleshooting Check the wiring between the PCB and the compressor Is it improperly wired Ensure...

Page 36: ...he priority Examples If indoor unit A is operating in the COOLING mode or the FAN mode and indoor unit B is set to the HEATING mode unit A will power off and unit B will continue to operate in the HEA...

Page 37: ...36 97 6 13059 76 169 1 34105 116 241 0 4006 3 27 41 5878 37 99 5 87359 77 171 1 29078 117 243 0 38991 2 28 39 8239 38 100 5 62961 78 172 1 25423 118 244 0 37956 1 30 37 1988 39 102 5 39689 79 174 1 2...

Page 38: ...37 3 74 165 8 358 114 237 2 489 5 23 234 9 35 95 35 78 75 167 8 084 115 239 2 422 4 25 222 8 36 97 34 32 76 169 7 82 116 241 2 357 3 27 211 4 37 99 32 94 77 171 7 566 117 243 2 294 2 28 200 7 38 100...

Page 39: ...2 5 36 5 30 86 61 141 8 92 197 6 123 253 4 3 37 4 31 87 8 62 143 6 93 199 4 124 255 2 3 5 38 3 32 89 6 63 145 4 94 201 2 125 257 4 39 2 33 91 4 64 147 2 95 203 126 258 8 4 5 40 1 34 93 2 65 149 96 20...

Page 40: ...t is for reference only and the photos may differ from your actual unit Procedure Illustration 1 Place your hands along the lter ssides pull the lter gently along the vertical direction and then remov...

Page 41: ...specifications and designs without notice and without obligations 41 DISASSEMBLY INSTRUCTIONS CONT Procedure Illustration 4 Open the panel assembly move the slider to secure the panel 5 Open the two...

Page 42: ...l the two sides of the bottom panel along the direction shown in the image to the right to remove it 8 Pull the panel s support bar to remove it 9 Remove the panel assembly Caution If you want to clos...

Page 43: ...and designs without notice and without obligations 43 DISASSEMBLY INSTRUCTIONS CONT Procedure Illustration 10 Remove 1 screw from the display board 11 Rotate the display board subassembly in the dire...

Page 44: ...tice and without obligations 44 DISASSEMBLY INSTRUCTIONS CONT Electrical parts Anti static gloves must be worn Procedure Illustration 1 Pull the two ends of the electronic control box cover with your...

Page 45: ...stration 4 Disconnect the wires 5 Remove one screw used for the ground connection 6 Pull two clips of the electronic control box along the direction shown in the picture to the right to remove the mai...

Page 46: ...tions 46 DISASSEMBLY INSTRUCTIONS CONT Procedure Illustration 7 Remove the other screw used for the ground connection 8 Collapse the support bar 9 Pull the electronic control box cover along the direc...

Page 47: ...ications and designs without notice and without obligations 47 DISASSEMBLY INSTRUCTIONS CONT Evaporator NOTE Remove the front panel electrical parts and the fan Procedure Illustration 1 Remove the 2 s...

Page 48: ...without obligations 48 DISASSEMBLY INSTRUCTIONS CONT Procedure Illustration 3 Remove the screw 1 on the evaporator located at the left xed plate 4 Remove the screw 1 on the evaporator located on the...

Page 49: ...and without obligations 49 DISASSEMBLY INSTRUCTIONS CONT Fan Motor and Fan Procedure Illustration 1 Open the two stop blocks of the chassis assembly see picture on the right 2 Remove the chassis asse...

Page 50: ...HB 01 40MAHB Service Manual Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations 50 DISASSEMBLY INSTRUCTIONS CONT Procedure Illustrat...

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