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UNITS 157 / 177 / 197 – COMMENTS
• S002 rotary switch (10 positions, black) / S003 DIP switches (2P, blue):
Address for split air to air units – not used for the application.
The factory setting below must not be changed :
• S001 AUTo ADDress push button switch (black):
Normally, the addressing sequence between refrigerant circuit power board A3 and control board A2 takes place when power is
initially turned on at the factory.
In case of board replacement or problem of communication on the field, it can be necessary to launch again an addressing
sequence. For that, press once the switch.
During automatic address setting, LEDs 1 & 2 are blinking alternatively (pressing again this switch stops automatic address
setting).
• S005 Pump down push button switch (red):
Used for split air to air units for refrigerant recovery sequence – not used for the application.
• CN032 RC-P Service remocon connection plug (5P, red): See PART 6
• JP007 jumper: Not used.
• CN036 Test plug (2P, red): Used for PCB inspection in factory.
• CN031 MODE plug (2P, white): Not used.
• CN012 ROM plug (4P, white):
Used for PCB software loading in factory with “PAC checker” interface.
• CN026 EXCT plug (3P, red): Designed for capacity control – not used.
• CN028 SILENT (or QUIET) MODE plug:
Software version:
Unit Version Date
157 (4HP)
V150
Nov. 2011
177 (5HP)
197 (6HP)
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