Specifications

15
■ High head pressure. ■ Faulty evaporator fan motor (heating only). Repair or replace.
■ Shorted or grounded fan motor. Test motor windings.
■ Restricted liquid line. Replace restricted part.
■ Dirty air filter (heating only). Inspect filter; clean or replace as needed.
■ Dirty indoor coil (heating only). Inspect coil and clean, if needed.
■ Not enough air across indoor coil (heating only). Check blower speed. Check duct
static pressure and filter.
■ Overcharge of refrigerant. Recover part of charge.
■ Dirty outdoor coil. Inspect coil and clean, if needed.
■ Noncondensibles. Recover charge. Evacuate and recharge.
■ Recirculation of condensing air. Remove obstruction to airflow.
■ Wrong type of expansion valve (heating only). Replace valve.
■ Expansion valve restricted. Remove restriction or replace valve.
■ Oversized expansion valve. Replace valve.
■ Faulty reversing valve (heating only). Replace valve or solenoid.
■ Faulty defrost control (heating only). Test control.
■ Faulty defrost thermostat (heating only). Test defrost thermostat.
Problem
No Cooling/Heating Cause/Test Method and/or Solution
Goodman 23 Long
Units with reciprocating or rotary compressors and non-bleed TXV’s require a Hard Start Kit.
NOTICE