Service manual

15-9
CONTROL SYSTEM > GC 24
SM HADDCI 1-A.2 GB
NLOAD limits as a function of indoor fan speed:
Indoor Fan Speed Maximum NLOAD Cooling Maximum NLOAD Heating
Low Max NLOADIF1C 127
Medium Max NLOADIF2C 127
High Max NLOADIF3C 127
Turbo Max NLOADIF4C 127
Auto Max NLOADIF5C 127
NLOAD limits as a function of power shedding:
Mode Power Shedding OFF Power Shedding ON
Cool No limit Nominal Cooling
Heat No limit Nominal Heating
15.4.13.4 Outdoor Unit NLOAD calculation
ODU NLOAD is the weighted average of IDU NLOAD
ODU codeH is defined as following:
ODU Code
Point Single WNG72 Single WNG80
A3 3---
B3 3---
C 3.8 3.8 - - -
D 3.8 3.8 - - -
E 3.8 3.8 - - -
The code for heat mode is related also to outdoor temperature and so in low heating conditions the
compressor speed will be higher.
Compressor speed will be set between the minimum speed and the max speed according to the
ODU NLOAD
ODU Codec is defined as following (EEPROM values):
Unit type
ODU codeC
Cool
Single (Default) 3
15.4.13.5 Speed Step Limitations
15.5.13.5.1 Step 1 and step 2
The compressor speed cannot go below Step1RPS or above Step2RPS during 3 continuous minutes once
after the compressor starts up when the ODU unit changes from STBY.
ODUCode
CodeNLOADIDU
NLOADODU



-15 -5 15 OAT2 2421
A
B
C
D
E
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