V-Design Series “Wall” Type R32 AC: 6. Troubleshooting
[6]-22
Troubleshooting and repair:
NO
YES
NO
YES
6.7.5 E4 / E5 / F1 / F2 / F3 (Open circuit or short circuit of temperature sensor diagnosis and solution)
Description
: If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED displays the failure code.
Recommended parts to check or to prepare:
• Connection wires
• Sensors
• PCB
Check the connection between
temperature sensor and PCB
.
Is it properly wired?
Ensure proper connections.
Measure the resistance
value of the sensor.
Replace the sensor.
Is the value
within acceptabl
e
parameters?
Replace indoor
PCB
(E4 / E5) or
outdoor PCB (F1 / F2 / F3).
Note:
For certain models, outdoor PCB could not be removed separately. In this case, the outdoor electric control box
should be replaced as a whole.
This picture and the value are only for reference, actual appearance and value may vary.