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AVZC18 Series
Amana AVZC18 Series User Manual
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57
SERVICING
2-Digit 7 Segm
ent Displ
ays
3. When the unit is hav
ing some minor error code in
normal mo
de, 2-digit 7 se
gment displays s
h
ow error c
ode and airflow status.
4. When the unit is hav
ing some minor error code d
uring defrost operation in normal
mode, 2-digit 7 segment dis
play shows state
“
dF,
”
error code and airflow status.
56
58
Table of Contents
Important Information
2
Service Instructions
1
Table of Contents
2
Important Notices for Consumers and Servicers
2
Safe Refrigerant Handling
2
Product Identification
4
Accessories
5
Capacitor
6
Replacing the Board
8
System Operation
9
Cooling Cycle
11
Troubleshooting
12
Heating Analysis
12
Cooling Analysis
13
Servicing
14
Servicing Table of Contents
14
Checking Thermostat and Wiring
15
Checking Voltage
15
Checking Wiring
15
S-3A Thermostat and Wiring
15
S-3E Ctk04** Comfortnet™ Thermostat
15
Thermostat Menu Screens
17
System Start - up Test
17
Set Thermostat to Charge Mode
20
Set Thermostat to Adjust Maximum Compressor Speed
23
Set Thermostat to Adjust Indoor Air Cfm Trim
25
Set Thermostat to Adjust Indoor Airflow Profile, Cool/Heat on Delay and Cool/Heat off Delay Defrost
28
Set Thermostat to Force Defrost Cycle
29
Set Thermostat to Pump down
31
7-Segment Ode Isplay to Pump down
34
Set Thermostat to Check System Status
35
Heat Pump with Outdoor Temperature Lockouts
35
Checking High Pressure Control Switch
36
Checking Indoor and Outdoor Hi/Low Pressure Sensor
36
Checking Transformer and Control Circuit
36
Checking Compressor
37
S-17A Resistance Check
37
S-17B Ground Test
37
Testing Temperature Sensors and Eev Coil Resistance
38
S-40A Avpec Heater Control
39
Checking Heater Elements
40
Checking Heater Limit Control(S) (Optional Electric Heaters)
40
Electric Heater (Optional Item)
40
Refrigeration Repair Practice
41
S-61A Checking Heater Limit Control(S)
41
S-61B Checking Heater Fuse Link (Optional Electric Heaters)
41
Evacuation
42
Leak Testing (Nitrogen or Nitrogen-Traced)
42
Charging
43
Checking Compressor Efficiency
44
Checking Subcooling
44
Compressor Burnout
45
Non-Condensables
45
Refrigerant Piping
45
Air Handler External Static
49
Duct Static Pressures And/Or Static Pressure Drop Across Coils
49
Coil Static Pressure Drop
50
Troubleshooting-Indoor Unit
51
Troubleshooting-Outdoor Unit
62
System Maintenance
63
Emergency Mode
65
Thermistor Resistance and Temperature Characteristics
84
Pressure Vs Temperature Chart
85
Liquid Line Temperature Chart
86
Wiring Diagrams
87
Wiring Diagram
88
4
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Amana AVZC18 Series Specifications
General
Brand
Amana
Model
AVZC18 Series
Category
Heat Pump
Language
English
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