Danfoss 101N0210 - User Manual

Sundanzer Refrigerato
r/Freezer Troubleshooting Tips
When the power is connected to the unit, does it attempt to start at all?
Does it run a short period of time then shut off without cooling much?
Does it run non-stop, never shut off and not cool?
You can also remove the side plastic grill and remove to screw that retains the
Electronic Control Unit (ECU) on the compressor. Then unplug the ECU from the
compressor and check the resistance on the compressor pins. It should be about
2.5 ohms between all three pairs: 1&2,2&3 and 1&3.
If so, the compressor should be fine. The most common failure is from low-
voltage disconnect. This can happen from oxidized connections, even when it
has been working fine for some time and sometimes it may be intermittent.
Disconnect, clean and reconnect all connections.
See the attached spec sheet for the Electronics Unit.

Summary

Troubleshooting Tips

Checking Compressor Resistance

Remove side plastic grill, unplug ECU from compressor, and check resistance on compressor pins (approx. 2.5 ohms).

Addressing Compressor Failures

Common failure is low-voltage disconnect from oxidized connections; clean and reconnect all connections.

Electronic Unit Operation and Features

Unit Overview and Installation

Dual voltage unit (12V/24V) with installation instructions for terminals, power supply, and fuse protection.

Battery Protection and Thermostat Control

Details on voltage-based battery protection settings and thermostat connection for compressor speed control.

Optional Fan and LED Indicators

Instructions for connecting an optional fan and LED for error reporting and diagnostics.

Danfoss 101N0210 Specifications