Table of Contents
Service manual
4
Table of Contents
2.1
2.2
2.2.1
Via service monitoring tool ............................................................................................................................
2.2.2
2.2.3
Via the outdoor unit ....................................................................................................................................... 11
2.2.4
2.2.5
2.2.6
2.3
To activate emergency operation................................................................................................................................... 16
2.4
Error based troubleshooting........................................................................................................................................... 18
2.4.1
2.4.2
2.4.3
2.4.4
2.4.5
2.4.6
2.4.7
2.4.8
2.4.9
2.4.10
2.4.11
2.4.12
2.4.13
2.4.14
2.4.15
2.4.16
2.4.17
2.4.18
2.4.19
2.4.20
2.4.21
2.4.22
2.4.23
2.4.24
2.4.25
2.4.26
2.4.27
2.4.28
2.4.29
2.4.30
2.4.31
2.4.32
2.4.33
2.5
Symptom based troubleshooting ................................................................................................................................... 42
2.5.1
Operation does not start................................................................................................................................ 42
2.5.2
Operation sometimes stops ........................................................................................................................... 42
2.5.3
2.5.4
Operating noise and vibrations ...................................................................................................................... 44
2.5.5
Abnormal high pressure ................................................................................................................................. 45
2.5.6
Abnormal low pressure .................................................................................................................................. 46
2.5.7
2.5.8
2.5.9
2.5.10
Unit discharges white mist ............................................................................................................................. 49
3.1
4-way valve...................................................................................................................................................................... 50
3.1.1
Checking procedures ...................................................................................................................................... 50
3.1.2
Repair procedures .......................................................................................................................................... 53
3.2
Compressor ..................................................................................................................................................................... 56
3.2.1
Checking procedures ...................................................................................................................................... 56
3.2.2
Repair procedures .......................................................................................................................................... 61
7
9
9
9
9
9
50
RZA200+250D7Y1B
Sky Air Advance-series
ESIE19-13A - 2020.05