Leak check solutions are generally acceptable in areas that are easily reached or where the air is saturated with refrigerant. However, several factors determine how…

Diagnosis Unit lacks heat/defrost capacity. Service Procedure 1. Test the pilot solenoid and 3-way valve for proper operation. 2. Check refrigerant charge. 3. Perform compressor…

Gauge Removal Preparation 1. Remove the high side gauge line from the discharge Schrader port. 2. Backseat the suction service valve and then crack open…

The scroll compressor can not be pumped down to check the efficiency of the compressor. Use the following procedure. Diagnosis This procedure checks loss of…

Diagnosis This procedure combines the functions of the 3-way Valve Heat Check and the Low Side Pump down. A high side pump down procedure will…

WARNING: New pump-down service techniques are required when working on scroll compressors. • When pumping down scroll compressors always operate the unit in low speed.…

Purpose: To check for a leak through the TherMax solenoid in the cool mode. Leak Test Procedure 1. Install a calibrated gauge manifold. 2. Confirm…

Purpose: To test the TherMax solenoid for opening. TherMax Solenoid Opening Test Procedure 1. Install a calibrated gauge manifold. 2. Remove the #26 wire from…

Purpose: To check for a leak through the receiver outlet check valve. 1. Install a calibrated gauge manifold. 2. Install an additional compound gauge on…

Purpose: To test for internal high to low side leaks and to perform low side service without refrigerant loss. Low Side Pump Down Procedure 1.…