Service Manual
Table Of Contents
- Important Safety Information
- I. Construction and Refrigeration Circuit Diagram
- II. Sequence of Operation and Service Diagnosis
- III. Controls and Adjustments
- IV. Refrigeration Circuit and Component Service Information
- V. Maintenance
- VI. Preparing the Appliance for Periods of Non-Use
- VII. Disposal
- VIII. Technical Information
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D. Diagnostic Table
Check for correct appliance installation per the instruction manual and proper voltage per
appliance nameplate.
1. Appliance Not Cooling
Appliance Not Cooling - Possible Cause
1. Power Supply
a) Unplugged, blown fuse, or tripped or defective circuit breaker.
b) Loose connection.
c) Not within specications.
2. Power Cord and Plug
a) Loose connection.
b) Defective.
3. Wiring a) Loose connection or open.
b) Faulty.
4. Control Module
See "III.D. Alarm Safeties."
a)
In alarm or "- - -" shown on display module on models with
remote display module.
b)
Defective.
5. Compressor External Protector
a) Dirty condenser.
b) Condenser fan not operating.
c) Defective.
d) Start relay defective.
e) Low charge.
f) Start capacitor (if applicable) defective.
6. Compressor a) Defective.
7. Condenser a) Dirty.
8. Evaporator Fan
a) Defective.
b) Fan blade binding.
9. Evaporator
a) Dirty or frozen up. See "2. Evaporator is Frozen Up."
10. Refrigerant/Refrigerant Lines a) Gas leak.
b) Refrigerant lines or components restricted.
11.
High-Pressure Switch
CPT67(-D), CPT93(-D), and all
CRES Models
a)
Dirty condenser.
b)
Ambient temperature too warm.
c)
Condenser fan not operating.
d)
Refrigerant overcharge.
e)
Refrigerant lines or components restricted.
f)
Defective.
12.
Defrost Heater
a)
Control module defective.
13.
Rail Air Duct Panels
CPT Models
a)
Misaligned.
b)
Missing.