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SDi Decades Extreme Service Manual www.ecoer.com
May. 2023Manufacturer reserves the right to change specifications or designs without notice.
8.7.4 EH 60/EH 61/EH 62/ EH 65/ EC 53/EC 52/EC 54/EC 57/EC 50/EC 5C (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.
Recommended parts to prepare:
• Connection wires
• Sensors
• PCB
Troubleshooting and repair:
Is it properly wired?
NO
NO
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
Is it within acceptable
parameters?
Ensure proper connections.
Measure the resistance
value of the sensor.
Replace the sensor.
Replace indoor PCB(EH XX)
or outdoor PCB(EC XX)
Check the connection between
temperature sensor and PCB.
YES
YES
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