Trane 25 Series User Manual

Common Error Codes
Error Codes Malfunction Type Possible Causes
C5
System Configuration Malfunction
1. Jumper cap missing from the control
board.
2. Incorrect or damaged jumpercap on
control board.
3. Indoor and outdoor units are not
compatible.
E1
High Pressure
1. Overcharged with refrigerant.
2. Blocked or dirty outdoor coil.
3. Extreme outdoor ambient conditions.
E2
Indoor Anti-Freeze Protection
1. Low return airflow.
2. Indoor fan speed is too low.
3. Indoorcoil is blocked or dirty.
E4 / E8
High Temperature Resistant
Protection
1. Incorrect refrigerant charge level.
2. Refrigerant metering device malfunction.
3. Compressor malfunction.
E5
Overcurrent Protection
1. Supply voltage is unstable.
2. Supply voltage is too low and system
load is too high.
3. Indoorcoil is blocked or dirty.
E6
Communication Malfunction
1. Communication cable is mis-wired
between indoor and outdoor units.
2. Indoor or Outdoor control board
malfunction.
F0
Refrigerant Leakage Protection
1. Refrigerant leak(s).
2. Indoor coil temperature sensor out of
calibration.
3. Refrigerant flow is restricted (ex. valve,
exv, debris)
F1
Indoor Ambient Temperature
Sensor Malfunction
1. Measure sensor resistance.
2. Discharge temperature sensor
damaged.
3. Loose or bad connection between
sensor and control board.
F2
Indoor Coil Temperature Sensor
Malfunction
F3
Outdoor Ambient Temperature
Sensor Malfunction
F4
Outdoor Coil Temperature Sensor
Malfunction
F5
Outdoor Discharge Temperature
Sensor Malfunction
H3
Compressor Overload Protection
1. Wiring terminal OVC-COMP is loose.
2. Compressor has reached 239°F.
43
25 Series Single Zone

Trane 25 Series Specifications

General

Brand	Trane
Model	25 Series
Category	Air Conditioner
Language	English