SERVICING
Checking Voltage | 35 | Checking Heater Elements | 52 | ||
Checking Wiring | 35 | MBR/ARUF Electronic Blower Time Delay |
| ||
Checking Thermostat, Wiring & Anticipator .. | 35 |
| with Single Stage Air Conditioners |
| |
Thermostat & Wiring | 35 |
| & Heat Pumps | 52 | |
Cooling Anticipator | 36 | MBE/AEPF with GSX, SSX, ASX, DSX |
| ||
Heating Anticipator | 36 |
| Air Conditioners | 54 | |
Checking Encoded Thermostats | 36 | MBE/AEPF with GSZ, SSZ, ASZ |
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Checking Transformer & Control Circuit | 37 |
| Heat Pumps | 55 | |
Checking Cycle Protector | 37 | Electric Heater (optional item) | 58 | ||
Checking Time Delay Relay | 37 | Checking Heater Limit Control(S) | 59 | ||
Checking Contactor and/or Relays | 38 |
| Checking Heater Fuse Line | 59 | |
Checking Contactor Contacts | 38 | Checking Heater Elements | 59 | ||
Checking Fan Relay Contact | 38 | Refrigeration Repair Practice | 60 | ||
Copeland Comfort™ Alert Diagnositics | 39 | Leak Testing | 60 | ||
Checking Loss of Charge Protector | 41 | Evacuation | 60 | ||
Checking High Pressure Control | 41 | Charging | 61 | ||
Checking Low Pressure Control | 41 | Checking Compressor Efficiency | 62 | ||
Checking Capacitor | 41 | Piston Chart - ASX13, GSX13, SSX14, |
| ||
Resistance Check | 42 |
| ASX14, ASZ13, GSZ13 Units | 63 | |
Capacitance Check | 42 | Thermostatic Expansion Valve | 63 | ||
Checking Fan & Blower Motor |
| Overfeeding | 66 | ||
| Windings (PSC Motors) | 43 | Underfeeding | 66 | |
Checking Fan & Blower Motor (ECM Motors) 43 | Superheat | 66 | |||
Checking ECM Motor Windings | 46 | Checking Subcooling | 66 | ||
ECM CFM Adjustments | 46 | Two Speed Application | 67 | ||
Blower Performance Data | 48 | Heat Pump Heating Mode | 67 | ||
Checking GE X13™ Motors | 48 | Checking Expansion Valve Operation | 67 | ||
Checking Compressor Windings | 49 | Fixed Orifice Restriction Devices | 67 | ||
Resistance Test | 49 | Checking Restricted Liquid Line | 68 | ||
Ground Test | 49 | RefrigerantOvercharge | 68 | ||
Unloader Test | 50 | 68 | |||
Operation Test | 50 | Compressor Burnout | 68 | ||
Testing Crankcase Heater (optional item) | 51 | Refrigerant Piping | 69 | ||
Checking Reversing Valve and Solenoid | 51 | Duct Static Pressure |
| ||
Testing Defrost Control | 51 |
| & Static Pressure Drop Across Coils | 71 | |
Testing Defrost Thermostat | 51 | Air Handler External Static | 71 | ||
Checking Heater Limit Control(s) | 52 | Coil Static Pressure Drop | 72 |
HIGH VOLTAGE!
Disconnect ALL power before servicing or installing. Multiple power sources may be present. Failure to do so may cause property damage, personal injury or death.
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