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1. ABBREVIATIONS
ST
= Setting temperature
RT
= Room air temperature
IPT
= Indoor coil temperature
OPT
= Outdoor coil temperature
PTC data
= R25-5.00KOhm±1% B25/50=3470K±1%
2. CONTROL SYSTEM OPERATION
2.1. REMOTE HANDSET AND ON-BOARD PANEL OPERATION
2.1.1. REMOTE HANDSET FUNCTIONS
Remote handset functions are Unit ON/OFF, Mode, Fan Speed, Set Temperature, Swing
Function, Timer ON, Timer OFF, Electric heater and Sleep Function
2.1.2. ON-BOARD PANEL FUNCTIONS
On-board panel functions are Unit ON/OFF, Mode, Fan Speed, Set Temperature and Electric
heater.
2.2. MODE INTRODUCTION
2.2.1 AUTO MODE
After turning the unit on, select the auto mode. The unit will select its operation mode by
judging room temperature (see below table):
Indoor temp.
Operating mode
Standard fixed setting
temperature
2.2.2 COOLING MODE
2.1.2.1 Setting temperature：18℃-30℃.
2.1.2.2 Working conditions of compressor：
a. Compressor works when RT≥ST+1℃；
THROUGH THE WALL UNIT
PTTW CONTROL SPECIFICATIONS
Indoor ≤ 20℃
HEATING
20℃
20℃＜indoor＜25℃
FAN
22℃
21
Indoor ≥ 25℃
COOLING
25℃
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