The M910138 electronic controller is a microprocessor controlled thermostatic device, designed to control cooling , heating and defrost for the refrigeration. It actuates in a temperature range from -40°F to +139°F. A single setpoint is used for heat and cooling, the system will automatically switch modes to maintain the setpoint entered.
The ATC M910138 is a microprocessor-controlled thermostatic device designed to manage cooling, heating, and defrost cycles in refrigeration applications. It features a control panel with an LED display, allowing users to set a single point for automatic mode switching between heat and cool based on temperature differentials.
The document details system parameters such as evaporator coil temperature monitoring, various defrost modes (automatic by time or temperature, and manual), and drip modes. It also explains how to access the parameter menu using a password, adjust settings like cooling/heating differentials, and utilize test modes for troubleshooting outputs.
| Operating Temperature Range (Controller) | -40°F to +139°F |
|---|---|
| Nominal Voltage Range | 12 to 24VDC |
| Functional Voltage Range | 10 to 29VDC |
| Peak Voltage Tolerance | 32VDC for 5 minutes |
| Polarity Reversion Support | -12Vdc / -24Vpc indefinitely |
| Maximum Output Current per Pin | 400mA |
Press the power button once quickly to turn on the device.
The password required to access the parameter menu is 041.
Press simultaneously the up and down arrows for 3 seconds, type the password 023, then press Enter.
Yes, changing parameter 'bL' to 1 will block setpoint changes.