Daikin EWYA004D2V3P Installer's Reference Manual page 4

Table of contents
Installer reference guide
4
12 Commissioning
12.1 Overview: Commissioning .............................................................................................................................................. 185
12.2 Precautions when commissioning .................................................................................................................................. 186
12.3 Checklist before commissioning..................................................................................................................................... 186
12.4 Checklist during commissioning ..................................................................................................................................... 187
12.4.1 Minimum flow rate......................................................................................................................................... 187
12.4.2 Air purge function........................................................................................................................................... 188
12.4.3 Operation test run.......................................................................................................................................... 190
12.4.4 Actuator test run ............................................................................................................................................ 190
12.4.5 Underfloor heating screed dryout ................................................................................................................. 191
13 Hand-over to the user
14 Maintenance and service
14.1 Maintenance safety precautions.................................................................................................................................... 196
14.2 Yearly maintenance ........................................................................................................................................................ 196
14.2.1 Yearly maintenance outdoor unit: overview ................................................................................................. 196
14.2.2 Yearly maintenance outdoor unit: instructions............................................................................................. 197
15 Troubleshooting
15.1 Overview: Troubleshooting ............................................................................................................................................ 198
15.2 Precautions when troubleshooting ................................................................................................................................ 198
15.3 Solving problems based on symptoms........................................................................................................................... 199
15.3.1 Symptom: The unit is NOT heating or cooling as expected........................................................................... 199
15.3.2 Symptom: Hot water does NOT reach the desired temperature.................................................................. 199
15.3.3 Symptom: The compressor does NOT start................................................................................................... 200
15.3.4 Symptom: The system is making gurgling noises after commissioning ........................................................ 200
15.3.5 Symptom: The pump is blocked..................................................................................................................... 201
15.3.6 Symptom: The pump is making noise (cavitation)......................................................................................... 202
15.3.7 Symptom: The pressure relief valve opens.................................................................................................... 202
15.3.8 Symptom: The water pressure relief valve leaks........................................................................................... 202
15.3.9 Symptom: The space is NOT sufficiently heated at low outdoor temperatures........................................... 203
15.3.10 Symptom: The pressure at the tapping point is temporarily unusually high................................................ 203
15.4 Solving problems based on error codes ......................................................................................................................... 203
15.4.1 To display the help text in case of a malfunction .......................................................................................... 204
15.4.2 Error codes of the unit ................................................................................................................................... 204
16 Disposal
16.1 Overview: Disposal.......................................................................................................................................................... 209
16.2 To pump down ................................................................................................................................................................ 209
17 Technical data
17.1 Piping diagram: Outdoor unit ......................................................................................................................................... 212
17.2 Wiring diagram: Outdoor unit ........................................................................................................................................ 213
17.3 ESP curve: Outdoor unit ................................................................................................................................................. 221
18 Glossary
19 Field settings table
185
195
196
198
209
211
222
223
EWAA004~008D + EWYA004~008D
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P688013-1B - 2022.09