SM YAZE218 1-A.2 GB | 11—13
11—CONTROL SYSTEM
11.5.3.8 Accumulative correction value storage
For each combination of active IDUs, the accumulated EEV correction value (for each IDU) will
be stored in the memory. Default correction values after power up are zero.
11.5.4 Outdoor Fan Speed Control
The OFAN operation keeps the outdoor heat exchanger temperature within a prede ned values
by increasing or reducing the OFAN speed. Whenever the OFAN speed is abnormal, the OMT
and OCT sensors need to be checked.
11.5.4.1 Behavior when there is a failure in OFAN
Whenever OFAN fault occurs, the compressor will be stopped immediately.
11.5.4.2 Protection Behavior
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In cool mode the OFAN will operate according to CTT or HST protection level:
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SR, D1 or D2
OFAN will go to the Max. speed
Stop-Compressor
Continue to operate for maximum 3 minutes at 500 rpm or until normal level is
achieved.
11.5.4.3 OFAN Force On condition
If HST is faulty, OFAN will continue to operate for 3 minutes at 500 rpm after COMP is OFF.
11.5.4.4 Night mode
Upon receiving night mode, the OFAN will be limited to max NightRPM speed only in Cool. It
will be back to its normal operation when receiving the mode is cleared.
11.5.5 RV State Setting
During heat mode (except during Deicing) RV is ON. During cool/SB mode, RV is OFF.
RV status will be changed only if COMP is OFF for 3 minutes or more.
11.5.6 Base Heater Setting
Base heater should be ON when unit is in heating and according to the below graph. If OAT is
disconnected, Base heater will be ON when unit is in heating.
Base Heater at heating mode
Note: ‘On’ state has higher priority.
Summary of Contents for YAZE218
Page 11: ...4 1 SM YAZE218 1 A 2 GB 4 OUTLINE DIMENSIONS 4 OUTLINE DIMENSIONS 4 1 Indoor Unit HJD009 012 ...
Page 25: ...6 2 SM YAZE218 1 A 2 GB 6 OPERATING CURVES 6 1 2 Heating Technician Mode ...
Page 26: ...SM YAZE218 1 A 2 GB 6 3 6 OPERATING CURVES 6 1 3 Tubing Length correction Factor ...
Page 28: ...SM YAZE218 1 A 2 GB 8 1 8 WIRING DIAGRAMS 8 WIRING DIAGRAMS 8 1 YAZE218 Wiring Diagrams ...
Page 29: ...8 WIRING DIAGRAMS 9 1 SM YAZE218 1 A 2 GB 9 REFRIGERATION DIAGRAMS 9 1 YAZE218 Cooling Mode ...
Page 30: ...8 WIRING DIAGRAMS SM YAZE218 1 A 2 GB 9 2 9 2 YAZE218 Heating Mode ...
Page 77: ...14 1 SM YAZE218 1 A 2 GB 14 APPENDIX A 14 APPENDIX A INSTALLATION AND OPERATION MANUAL ...
Page 78: ...SERVICE MANUAL YAZE218 ...
