Daikin FCQ18PAVJU Service Manual Page 69
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SiUS281117 Outline of Control (Indoor Unit)
62 Function and Control
Note: 1: Fixing of the fan H tap.
2: The heater backup prohibiting conditions are prioritized. Even when the heater ON
conditions are met, the heater is turned OFF when the prohibiting conditions are met.
3: The operation must continue for a certain period of time after the heater turns OFF.
4: The thermostat steps for this control comply with the “6.9 4 Step Thermostat Processing
(FTQ)”.
6.9 4 Step Thermostat Processing (FTQ)
[Outline]
The thermostat ON/OFF for the indoor unit is controlled in accordance with [Thermostat Step 1].
The heater ON/OFF operation during heating is controlled in accordance with [Thermostat Step
2, 3, or 4] or [Thermostat Step 1, 2, or 3].
For more details of the heater, see 6.8 Heater control.
[Detail]
&
&
OR
Condition A
• Hot-water heater = "1" (ON)
OR
Condition B
• Heating mode
• Thermostat step 1 = "ON"
• Not during fan residual operation
• [Electrical heater setting] = "01"
• [Electrical heater setting] = "03"
• Elimination of Condition A
• Indoor unit error [Stop due to error]
• Indoor unit error [Abnormal stop]
• Indoor unit error [Remote control thermistor error]
• Indoor unit error [Suction air thermistor error]
• During defrosting or oil return operation
Heater backup
prohibiting conditions ∗2
&
OR
• Drain pump abnormal output = OFF
• Thermostat OFF error has not occurred.
• Forced thermostat OFF = "0" (OFF)
• Normal operation = ON
• Remote control operation mode = "Heating"
• Not during anti-freeze operation
• [Thermostat step 1] = "OFF"
• [Thermostat step 2] = "OFF"
• [Thermostat step 3] = "OFF"
• [Thermostat step 4] = "OFF"
Elimination conditions of the above
Perform the processing
in the following chart.
(1) Cooling (2) Heating
1
∗1
1
∗1
Set temperature
Controlled temperature (˚F)
[Thermostat step 1]
ON
OFF
7.2
3.6
[Thermostat step 2]
ON
OFF
∗1: This value varies according to the field setting
Set temperature
[Thermostat step 1]
ON
OFF
[Thermostat step 4]
1
∗1
1
∗1
<Ttson>
<Ttsoff>
[Thermostat step 2]
ON
OFF
2.7
2.7
[Thermostat step 3]
2.72.7
ON
OFF
ON
OFF
∗1: This value varies according to the field setting
Controlled
temperature (˚F)
- Service 1
- RZR-P, RZQ-P(9) Series 2
- Cooling Only / Heat Pump 2
- R-410A 60Hz 2
- Table of Contents iii 4
- 1. Safety Considerations 6
- General Information 8
- Refrigerant Circuit 9
- 1.1 Cooling Only 10
- 1.2 Heat Pump 10
- 2. External Appearance 11
- 2.2 Remote Controller 12
- 2.3 Outdoor Units 12
- 1. Refrigerant Circuit 13
- Refrigerant Circuit 7 14
- 1.2 RZR36 / 42PVJU 15
- RZQ36 / 42PVJU(9) 15
- Refrigerant Circuit 9 16
- 2. Functional Parts Layout 17
- Remote Controller 18
- 1. Wired Remote Controller 19
- 1.2 Names and Functions 20
- 3P166742-1 21
- Remote Controller 15 22
- 16 Remote Controller 23
- Situation 24
- 18 Remote Controller 25
- Group No 26
- Mode No 26
- Field setting 26
- 20 Remote Controller 27
- Group Address (Unit) 27
- <Group Address (Group)> 28
- 3P107422-11J 29
- 3P107422-8S 29
- 3P107422-17M 29
- 3P107422-21S 29
- C: 3P107422-11J 30
- Introduction 31
- 3. Service Mode 32
- 3.1.2 Service Setting 33
- 3.2 BRC1E71 35
- 4. Inspection Mode 37
- Function and Control 38
- 1. Function General 39
- 2. Basic Control 40
- 2.2 Compressor PI Control 41
- SiUS281117 Basic Control 43
- 36 Function and Control 43
- 3. Special Control 44
- 3.2 Oil Return Operation 45
- 3.3 Defrosting Operation 47
- 3.5 Restart Standby 49
- 3.6 Stopping Operation 49
- 4. Protection Control 51
- "E4" is output 52
- E4" is output 52
- F3" is output 53
- L8" is output 54
- L9" is output 54
- L4" is output 54
- 5. Other Control 55
- 6.1 Drain Pump Control 56
- AF” is Displayed on the 57
- Function and Control 51 58
- Suction air temperature (TH1) 59
- : Factory setting 61
- 6.5 Freeze-up Prevention 62
- · lapse of 3 minutes 64
- · [TH2] > 93.2˚F 64
- · "Tc" > 125.6˚F 64
- The fan is ON: ON 65
- The fan is OFF: OFF 65
- 6.8 Heater Control (FTQ) 66
- 3: High pressure condition 67
- 6.8.2 Heat Pump Lockout Mode 68
- 62 Function and Control 69
- 6.10.1 Humidifier 70
- 6.10.2 Economizer 71
- 6.10.3 Air Purifier 71
- Field Setting 72
- 1. Test Operation 73
- 1.1.3 Check Operation 74
- SiUS281117 Test Operation 75
- 68 Field Setting 75
- UH” error 76
- UH” or “U4” 76
- 2.1 Wired Remote Controller 77
- 2.1.2 BRC1E71 78
- 72 Field Setting 79
- FIELD SETTING MODE 80
- SECOND CODE NO 80
- FIRST CODE NO 80
- 74 Field Setting 81
- Field Setting 75 82
- Filter Sign Setting 83
- Electrical Heater Setting 83
- (Local Setting) 85
- How to Select Operation Mode 86
- Outdoor Unit PCB 87
- 3.2 Setting by DIP Switches 88
- 3.3 Setting by BS Buttons 88
- Mode changing procedure 89
- 3.4 Setting Mode 1 90
- 3.5 Setting Mode 2 91
- Field Setting 85 92
- 3.6 Monitor Mode 93
- X X X X X X 94
- Operation sound 95
- Demand level 1 instructing 97
- (1) (2) (3) : Factory setting 98
- 92 Field Setting 99
- 3.7.6 Check Operation 100
- Service Diagnosis 101
- SiUS281117 102
- Service Diagnosis 95 102
- Circuit breaker 103
- 88" 105
- 2.1 Mode ChangeOver 106
- UNIT No 107
- Operation lamp 108
- Error code 108
- Applicable 108
- "UP" button 109
- "DOWN" button 109
- 2.4 Error Codes - Sub Codes 111
- 2.4.2 Outdoor Unit 112
- Service Diagnosis 107 114
- 108 Service Diagnosis 115
- Actuation of external 116
- Replace the indoor unit PCB 116
- Change the second code No 116
- 110 Service Diagnosis 117
- Service Diagnosis 111 118
- Troubleshooting 119
- Service Diagnosis 113 120
- Remove the foreign matter 121
- Connect correctly 121
- Replace the fan motor 121
- Service Diagnosis 115 122
- Service Diagnosis 117 124
- 118 Service Diagnosis 125
- 2.13 Drain System Abnormality 127
- Install a capacity setting 128
- 122 Service Diagnosis 129
- 01" 130
- , or parts may be damaged 131
- 126 Service Diagnosis 133
- FBQ18/24/30 PC0609-2 133
- FBQ36/42 PC0609-3 133
- 128 Service Diagnosis 135
- Abnormality 136
- External factor (Noise, etc.) 137
- Replace the outdoor unit 137
- Check the fan motor 137
- Service Diagnosis 131 138
- Service Diagnosis 133 140
- Service Diagnosis 135 142
- Open the stop valve 143
- Remedy the cause 143
- Replace the compressor 143
- Service Diagnosis 137 144
- 138 Service Diagnosis 145
- E9" recur? 146
- 140 Service Diagnosis 147
- Service Diagnosis 141 148
- 144 Service Diagnosis 151
- Service Diagnosis 145 152
- H9, J3, J5, J6 153
- Service Diagnosis 147 154
- Service Diagnosis 149 156
- Service Diagnosis 151 158
- P4" 160
- L4" 160
- P4" troubleshooting 160
- Compressor inspection 161
- Service Diagnosis 155 162
- Output current check 163
- 2.39 Inverter Startup Error 164
- E7" 166
- LC") 166
- Continue the operation 167
- 2.42 Refrigerant Shortage 168
- 162 Service Diagnosis 169
- 164 Service Diagnosis 171
- Service Diagnosis 165 172
- U4" 174
- Indoor Unit) 175
- Controller and Indoor Unit) 177
- 2.49 System is not Set yet 179
- Service Diagnosis 173 180
- 174 Service Diagnosis 181
- Check for Fan Motor Connector 182
- Outdoor Unit 183
- Thermistors 184
- Overview of Thermistors 184
- Checking 184
- Table 1 Table 2 Table 3 185
- Check Pressure Sensor 186
- 180 Service Diagnosis 187
- Clogged Points 188
- Appendix 189
- C: 3D062238C 190
- 3D065366A 191
- 4D024460F 192
- 4D034245F 192
- FTQ18PAVJU 193
- FTQ24PAVJU 193
- 2. Wiring Diagrams 194
- RZR36PVJU / RZR42PVJU 195
- RZQ36PVJU9 / RZQ42PVJU9 195
- 2.2 Indoor Unit 196
- FHQ36MVJU / FHQ42MVJU 197
- FAQ18PVJU / FAQ24PVJU 198
- ( ) 199
- 3D065036F 200
- SiUS281117 Wiring Diagrams 201
- 194 Appendix 201
- Cautions on product corrosion 202
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