Comfort-Aire PAD-121, PAD-91 User Manual
SERVICE MANUAL
PORTABLE
ROOM AIR CONDITIONER
Models: PAD-91
PAD-121
Technical Service Manual
IMPORTANT NOTICE
This service manual is intended for use by individuals possessing
adequate backgrounds of electrical, electronic and mechanical experience.
Any attempt to repair the appliance may result in personal injury and
property damage. The manufacturer or seller cannot be responsible for
the interpretation of this information, nor can it assume any liability in
connection with its use.
The information, specifications and parameter are subject to change due
to technical modification or improvement without any prior notice. The
accurate specifications are presented on the nameplate label.
Technical Service Manual
CONTENT
CHAPTER 1 PRODUCTS----------------------------------------1
CHAPTER 2 FEATURES-----------------------------------------2
CHAPTER 3 OPERATING RANGE--------------------------- 3
CHAPTER 4 PERFORMANCE CURVE----------------------4
CHAPTER 5 WIRING DIAGRAMS-----------------------------5
CHAPTER 6 REMOTE CONTROLLER-----------------------6
CHAPTER 7 REFRIGERATION CYCLE----------------------8
CHAPTER 8 INSTALLATIONS--------------------------------- 9
CHAPTER 9 TROUBLESHOOTING--------------------------12
CHAPTER 10 EXPLODED VIEW--------------------------------13
CHAPTER 11 PARTS LIST…………………………………15
Technical Service Manual
CHAPTER 1 PRODUCTS
Window Type Room Air Conditioner
No.
1
Model
PAD-91
No. Model
3 PAD-121-E
2 PAD-121
1
Technical Service Manual
CHAPTER 2 FEATURES
MODE DESCRIPTION
COOLING Cools, dehumidifies and filters the room air. Maintains desired room temperature.
FAN ONLY Re-circulates and filters the room air. Maintains constant air movement in the room.
FAN SPEED
HIGH
LOW
TEMP. SET
UP
DOWN
TIMER
ENERGY
SAVING
1.The appliance can set at different indoor fan motor speed by pressing the FAN
SPEED button on the remote controller.
2. When this symbol is being displayed on the LCD of the remote controller, the
signal is transmitting from the remote controller to the air conditioner.
Press DOWN button once, the set temperature is decreased by 1°F.
Press UP button once, the set temperature is increased by 1°F.
Automatically switches the appliance ON at preset time intervals, ensuring a
comfortable environment before you return home, or switches OFF the appliance
automatically when you sleep without wasting electricity.
When the room temperature is higher than the setting temperature 4
compressor is on. When the room temperature is lower than the setting
temperature, the compressor is off and the fan motor runs low speed..
When the room temperature is lower than 66°F , the unit turns off. (For Electronic
Type)
°F, the
2
Technical Service Manual
CHAPTER 3 OPERATING RANGE
Temperature rang for air conditioner
z The preset temperature of the appliance ranges from 66°F to 88°F.
z The ambient temperature of the cooling only air conditioner ranges from 64.4°F to 109.4°F.
z The rated cooling operation test condition is as following.
Indoor DB/WB temperature: 80°F /67°F
outdoor DB/WB temperature: 95°F /75°F
z The rated heating operation test condition is as following.
z indoor DB/WB temperature: 20℃/Max.15℃
z outdoor DB/WB temperature: 7℃/6℃
3
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