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WYT Series
Pioneer WYT Series User Manual
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CS78421-548-754
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IMPORT
ANT NOTICE:
Please read this manual carefully before installing
or operating your new air conditioning system.
Be sure to save this manual for future reference.
Service Manual
WYT
Inverter Series
For
9,000-36,000 BTU/hr Systems
2
Table of Contents
Table of Contents
2
Models
2
Important Notice
3
How to Order Spare Parts
3
Indoor Unit
4
Product Dimensions
4
Outdoor Unit
5
Cooling Only
6
Heat Pump
6
Refrigeration Cycle Diagram
6
Remote Controller
7
Remote Control
7
Operation Details
7
Electronic Controller
8
Safety Protection
8
“Feel” Mode Operation
8
“COOLING” Mode Operation
8
“HEATING” Mode Operation
9
Auto Fan Control in Cooling Mode
9
“DRY” Mode Operation
9
Outdoor Temperature Affects Running Frequency of the Compressor
9
Auto Fan Control
10
4-Way Valve Control
10
Defrosting
10
Indoor Exchanger Overheat Protection
11
“SLEEP” Mode
11
EMERGENCY Operation
11
AUTO-RESTART Function
11
Outdoor Failure Display
12
Protection Display Code List
12
Error List
12
Display on Outdoor Power Source Board
13
Wiring Diagram
14
Safety Rules and Recommendations for the Installation
17
Precaution
17
Safety Rules and Recommendations for the User
18
Safety Rules and Prohibitions
19
Names of Parts
20
Connecting Cables
21
Installation Manual
21
Connecting Pipe Length
21
Installation Details
21
Installation for the First Time
22
Drilling a Hole in the Wall for the Piping
23
Electrical Connections
23
Installation of the Mounting Plate
23
Connections to the Indoor Unit
24
Indoor Unit Condensed Water Drainage
24
Connecting the Pipes
24
Refrigerant Piping Connection
24
Connecting the Pipe
25
Bleeding
25
Electronic Connections
25
Outdoor Control Diagram
26
The Structure of ODU PCB
26
Trouble Shooting
26
Connection of ODU PCB
27
Current Flow
28
Display E6
29
Examples of Repairing
29
Display E1 or E2
29
Display E3, E7
30
Display E8
30
Display E0,E5
31
Outdoor Pipe Temp Sensor Damage
31
Display EA
32
Current Sensor Fault
32
Display EU
33
Display E9
33
Display EE
34
Display CL
34
DC over Current Error
35
Error Memory Is Recorded
35
E0,E5 Error
36
Thermistor Temperature Characteristics
37
Outdoor Unit Sensor Temperature Characteristics
38
TH3: Outdoor Unit Discharge Pipe Sensor
39
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Pioneer WYT Series Specifications
General
Brand
Pioneer
Model
WYT Series
Category
Air Conditioner
Language
English
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