Table of Contents
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Important Safety Information ...........................................
Introduction .........................................................................
Vert-I-Pak Model Number Identification Guide ...................
Serial Number Identification Guide ....................................
Chassis Specifications .......................................................
Extended Cooling Performance .........................................
Electrical Requirements .....................................................
Remote Thermostat and Low Voltage Control ..............
V-PAK Electronic Control Board Features ........................
Electronic Control Configuration .......................................
Diagnostics/Test Mode .................................................
Electronic Control Features ..............................................
Checking External Static Pressure ...................................
Checking Approximate Airflow ..........................................
Airflow Charts ....................................................................
Components Testing ....................................................
Refrigeration Sequence of Operation ...............................
Service .............................................................................
Sealed Refrigeration System Repairs ..............................
Refrigerant Charging ........................................................
Method Of Charging .........................................................
Undercharged Refrigerant Systems ............................
Overcharged Refrigerant Systems ...................................
Restricted Refrigerant Systems .......................................
Table of Contents
2-4
Capillary Tube Systems/Check Valve ..........................
4
Reversing Valve - Description/Operation ..................
5
Testing Coil ..................................................................
5
Checking Reversing Valves ....................................
6
Touch Testing Heating/Cooling Cycle .........................
7
Procedure For Changing Reversing Valve .............
8
Compressor Checks ....................................................
9-10
Locked Rotor Voltage Test ..........................................
11
Single Phase Connections .........................................
12
Determine Locked Rotor Voltage ...............................
12-13
Locked Rotor Amperage Test ......................................
14
15
Checking the Overload ...........................................
16
External Overload ........................................................
16
Compressor Single Phase Resistance Test ................
17-18
Compressor Replacement .....................................
19
Routine Maintenance ...................................................
20
21
21
Electrical Troubleshooting Chart - Heat Pump ...........
22
Refrigerant System Diagnosis - Cooling ....................
22-23
Refrigerant System Diagnosis - Heating ....................
23
Electrical and Thermostat Wiring Diagrams ...........
23
Technical Service Data ................................................
24
25
25
25-26
26
26-27
27
27
27
27
27
27
27-28
28
28
29-30
30
31
32
33
34
34
35-40
41
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Table of Contents
Troubleshooting
