Why is the high temperature alarm showing on my Bohn PRO3 Fan?
The high temperature alarm might be showing on your Bohn Fan because the alarm delay after defrost is too short or the alarm threshold is too low.
Provides detailed dimensions for the P2 cabinet without a weather hood.
Details the dimensions for the P3 cabinet without a weather hood.
Shows dimensions for the P2 cabinet including the weather hood.
Presents dimensions for the P3 cabinet with the weather hood.
Illustrates the recommended placement for a single PRO3 unit.
Shows spacing recommendations for two PRO3 systems.
Covers rigging, mounting requirements, and access for servicing.
Guidelines for inspection, safety precautions, and unit handling.
Instructions for changing the EZY parameter on the controller.
Step-by-step guide for installing the unit outdoors.
Lists standard components included with the outdoor PRO3 unit.
Information about the condensate drain outlet and its function.
Additional safety warnings related to lifting and transport.
Diagram showing curb placement on a walk-in cooler roof.
Diagram illustrating roof membrane installation over the curb.
Diagram showing the outdoor unit positioned on the roof.
Diagram depicting the final weather hood installation step.
Overview of PRO3 unit design for durability, reliability, and simplicity.
Explains the step-by-step operation of the refrigeration and defrost systems.
Explains how refrigeration and defrost sequences vary by model.
Table detailing operation status for low temp models with EZY=1.
Table for medium temp models with electric defrost (EZY=2).
Table for medium temp models with air defrost (EZY=3).
Explains the functionality of the Carel PJEZC electronic controller.
Instructions for installing the controller panel using screws.
Steps for dismantling the controller panel using screws.
Important warnings and guidelines for making electrical connections.
Explains the controller display icons and their meanings.
Diagram showing the wiring connections for the controller.
Steps for powering up and checking initial controller configurations.
Lists and describes control parameters for the thermostat.
Lists and describes defrost parameters for the thermostat.
Lists and describes alarm parameters for the thermostat.
Details keypad functions for turning the unit on/off and other operations.
Instructions for setting the desired temperature (set point).
How to initiate a manual defrost cycle.
How to activate continuous cooling for rapid temperature reduction.
How to view temperatures from other connected probes.
Setting temperature units, decimal points, and probe display.
Setting the desired temperature and its acceptable range.
Configuring the compressor operation mode (with or without defrost).
Using EZY for quick selection of parameter sets.
Lists and explains system alarms, their codes, and reset methods.
Details probe errors and alarms related to digital input.
Explains low/high temperature alarms and defrost status.
Describes system errors, parameter issues, and data errors.
Steps to access and modify frequent (F) and configuration (C) parameters.
Instructions for resetting controller parameters to factory defaults.
A chart detailing common issues, their causes, and corrective actions.
Default parameter settings for low temperature electric defrost models.
Default parameter settings for medium temperature electric defrost models.
Default parameter settings for medium temperature air defrost models.
A comprehensive chart for diagnosing and resolving system issues.
Catalog of available replacement parts for PRO3 units by cabinet and voltage.
Wiring diagram for P2 cabinet single-phase electric defrost systems.
Wiring diagram for P2 cabinet single-phase air defrost systems.
Wiring diagram for P3 cabinet single-phase electric defrost systems.
Wiring diagram for P3 cabinet single-phase air defrost systems.
Wiring diagram for P3 cabinet three-phase electric defrost systems.
Wiring diagram for P3 cabinet three-phase air defrost systems.
Information on purchasing an extended warranty for compressors.
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