Specifications

6 720 646 804
28
Troubleshooting/Problem Solving
Error code Meaning Solutions
E0 T2 sensor malfunction 1. Check wires for damage.
2. Check T2 sensor. Check wire connections
from sensor to control board.
3. Check T2 whether interfere with strong mag-
netic field.
4. Check actual temp. whether in O°C - 60°C
(tolerance +5°C).
E1 T3a sensor malfunction 1. Check wires for damage. Measure resistance
from control board connection. Refer to ther-
mister table 8. This is a 55 kOhm thermister.
2. Check wire connections from sensor to con-
trol board.
3. Check T3a sensor damage or not (resist-
ance).
4. Check T3a whether interfere with strong mag-
netic field.
5. Check actual temp. whether in -5°C - 30°C
(tolerance +5°C).
6. Check TXV for damage.
E4 T3b sensor malfunction 1. Check wires for damage. Measure resistance
from control board connection. Refer to ther-
mister table 8.
2. Check wire connections from sensor to con-
trol board.
3. Check T3b sensor for damage.
4. Check T3b whether interfere with strong mag-
netic field
5. Check actual temp. whether in O°C - 30°C
E5 T4 sensor malfunction 1. Check wires for damage. Measure resistance
from control board connection. Refer to ther-
mister table 8.
2. Check wire connections from sensor to con-
trol board.
3. Check T4 sensor for damage.
4. Check T4 whether interfere with strong mag-
netic field.
5. Check actual temp. whether in 30°C - 110°C
(tolerance 5°C)
6. Check refrigerant tubing for damage.
7. Check for refrigerant leakage.
Table 6