Table of Contents
Service manual
5
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
2.3.60 L5-00 – Outdoor unit: Inverter instantaneous overcurrent .......................................................................... 52
2.3.61 L8-00 – Malfunction triggered by a thermal protection in the main PCB..................................................... 53
2.3.62 L9-00 – Prevention of compressor lock ......................................................................................................... 54
2.3.63 LC-00 – Malfunction in communication system of outdoor unit .................................................................. 55
2.3.64 P1-00 – Open phase power supply imbalance .............................................................................................. 55
2.3.65 P3-00 – Abnormal direct current ................................................................................................................... 56
2.3.66 P4-00 – Outdoor unit: Malfunction of radiating fin temperature sensor..................................................... 56
2.3.67 PJ-00 – Capacity setting mismatch................................................................................................................. 56
2.3.68 U0-00 – Outdoor unit: Shortage of refrigerant ............................................................................................. 57
2.3.69 U1-00 – Malfunction by reverse phase/open phase ..................................................................................... 58
2.3.70 U2-00 – Outdoor unit: Defect of power supply voltage................................................................................ 58
2.3.71 U3-00 – Under floor heating screed dry out function not completed correctly .......................................... 59
2.3.72 U4-00 – Indoor/outdoor unit communication problem................................................................................ 59
2.3.73 U5-00 – User interface communication problem.......................................................................................... 60
2.3.74 U7-00 – Outdoor unit: Transmission malfunction between main microcomputer - inverter
microcomputer............................................................................................................................................... 61
2.3.75 U8-02 – Connection with room thermostat lost ........................................................................................... 61
2.3.76 U8-03 – No connection with room thermostat ............................................................................................. 62
2.3.77 U8-04 – Unknown USB device........................................................................................................................ 63
2.3.78 U8-05 – File malfunction ................................................................................................................................ 63
2.3.79 U8-07 – P1/P2 communication error............................................................................................................. 64
2.3.80 U8-11 – Connection with wireless gateway lost............................................................................................ 64
2.3.81 UA-00 – Indoor unit, outdoor unit mismatching problem ............................................................................ 65
2.3.82 UA-17 – Tank type problem ........................................................................................................................... 65
2.3.83 UF-00 – Reversed piping or bad communication wiring detection............................................................... 66
2.4 Symptom based troubleshooting ................................................................................................................................... 67
2.4.1 Symptom: Incorrect energy metering read-out ............................................................................................ 67
2.4.2 Water pump related....................................................................................................................................... 67
2.4.3 Tap water related ........................................................................................................................................... 69
2.4.4 Symptom: User interface is failure or frozen screen..................................................................................... 70
2.4.5 Symptom: Leak ............................................................................................................................................... 70
2.4.6 Symptom: Water flow or volume too low ..................................................................................................... 71
2.4.7 Compressor related........................................................................................................................................ 71
2.4.8 Symptom: Abnormal presence of ice............................................................................................................. 74
2.4.9 Symptom: Domestic hot water capacity shortage ........................................................................................ 75
2.4.10 Symptom: General capacity shortage............................................................................................................ 76
2.4.11 Symptom: Space heating capacity shortage.................................................................................................. 79
2.4.12 Symptom: Inaccurate temperature control................................................................................................... 80
2.4.13 Symptom: Power consumption too high ....................................................................................................... 81
2.4.14 Symptom: System does not start or operate................................................................................................. 83
2.4.15 Symptom: The pump is blocked..................................................................................................................... 85
3 Components 86
3.1 3-way valve...................................................................................................................................................................... 86
3.1.1 Checking procedures...................................................................................................................................... 86
3.1.2 Repair procedures .......................................................................................................................................... 89
3.2 4-way valve...................................................................................................................................................................... 96
3.2.1 Checking procedures...................................................................................................................................... 96
3.2.2 Repair procedures .......................................................................................................................................... 101
3.3 Backup heater ................................................................................................................................................................. 104
3.3.1 Built-in backup heater .................................................................................................................................... 104
3.3.2 Backup heater kit............................................................................................................................................ 112
3.4 Backup heater thermal protector................................................................................................................................... 121
3.4.1 Built-in backup heater .................................................................................................................................... 121
3.4.2 Backup heater kit............................................................................................................................................ 124
3.5 Booster heater ................................................................................................................................................................ 129
3.5.1 Checking procedures...................................................................................................................................... 129
3.5.2 Repair procedures .......................................................................................................................................... 132
3.6 Booster heater thermal protector.................................................................................................................................. 133
3.6.1 Checking procedures...................................................................................................................................... 133
3.6.2 Repair procedures .......................................................................................................................................... 134
3.7 Compressor ..................................................................................................................................................................... 134
3.7.1 Checking procedures...................................................................................................................................... 134
3.7.2 Repair procedures .......................................................................................................................................... 140
3.8 Compressor thermal protector....................................................................................................................................... 146
3.8.1 Checking procedures...................................................................................................................................... 146
3.8.2 Repair procedures .......................................................................................................................................... 147
3.9 Expansion valve............................................................................................................................................................... 149
3.9.1 Checking procedures...................................................................................................................................... 149
3.9.2 Repair procedures .......................................................................................................................................... 152
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