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Miss Brenda CampbellSep 12, 2025
What to do if my IBC AHU cool air temperature sensor is not working?
- LLuis SullivanSep 12, 2025
If the cool air temperature sensor is not working, check the sensor. For resistance reading, see Table 13.
What to do if my IBC AHU cool air temperature sensor is not working?
If the cool air temperature sensor is not working, check the sensor. For resistance reading, see Table 13.
What to do if my IBC Air Handlers thermostat shows a fault?
If your thermostat is showing a fault, it could be due to simultaneous heating and cooling calls. Ensure that the heating and cooling leads from the Nest thermostat are not crossed. Also, there is a known issue with some thermostat models over 3 years old where the backing plate allows a short, signaling an unintended call for cooling.
What to do if my IBC AHU fan has no RPM?
If there is no fan RPM detected, check if the fan is turning or disconnected. Also, check the fuse. Use a meter to verify that 120V is present on the external connection to the board. If 10V is not coming from the fan, it is not receiving 120V. Check the 10V signal on the web app.
What to do if the IBC AHU Air Handlers door is open or there is no fan signal?
If you receive a 'Door Open / No Fan Signal' error, first check if the service door is open or if the door switch is faulty. Also, check if the harness is disconnected and if the fan is turning.
What to do if my IBC Air Handlers A/C is freezing?
If freezing is detected in the A/C coil, the coil needs to defrost. Refer to the manual for the air conditioner for details on how to prevent freezing.
What to do if my IBC AHU dehumidifier is freezing?
If freezing is detected in the dehumidifier appliance, the coil needs to defrost. Refer to the manual for the dehumidifier for details on how to prevent freezing.
What to do if my IBC AHU Air Handlers inlet temperature sensor is not working?
If the inlet temperature sensor is not working, check the sensor. For resistance reading, see Table 13.
What to do if my IBC AHU Air Handlers air out temperature sensor is not working?
If the air out temperature sensor is not working, check the sensor. For resistance reading, see Table 13.
What to do if my IBC AHU Air Handlers A/C temperature sensor is not working?
If the A/C temperature sensor is not working, check the sensor. For resistance reading, see Table 13.
What to do if my IBC Air Handlers outdoor temperature sensor is not working?
If the outdoor temperature sensor is not working, check the sensor. For resistance reading, see Table 13.
General| Brand | IBC |
|---|---|
| Model | AHU Series |
| Category | Air Handlers |
| Language | English |
Explains symbols for Danger, Warning, Caution, and Note.
Crucial safety precautions for installation, operation, and servicing.
Details heating capacity for AHU models based on water temp and flow.
Provides physical dimensions and opening sizes for AHU models.
Diagrams and measurements for AHU 800.
Diagrams and measurements for AHU 1200.
Diagrams and measurements for AHU 1600.
Low voltage terminal connections for thermostats and accessories.
Lists key features and advantages of the IBC air handling appliance.
Outlines installation conformity requirements with codes.
Guidelines for selecting an appropriate location for the appliance.
Guidance for placing the appliance in conditioned areas, considering noise.
Guidance for placing the appliance in unconditioned areas, including freeze protection.
Notes on using the appliance during construction and warranty.
Requirements for installing the appliance in mobile homes.
Approval and clearance for closet installation.
Safety guidelines for garage installation, regarding vapors.
Ensures front panel accessibility for maintenance and setup.
Guidance on orienting and securely mounting the unit.
Details options for return air openings: left, right, and bottom.
Options for vertical and horizontal air flow.
Placement options for cased evaporator coils.
Instructions for mounting the appliance using wall brackets.
Step-by-step guide to repositioning filter brackets.
Guidelines for ducting design and installation.
Provides guidance and tables for sizing ducts based on CFM.
Recommendations for insulating supply air ducting in conditioned spaces.
Recommendations for insulating ducting in unconditioned spaces.
Instructions for creating return air openings on the appliance.
Guidance on positioning and piping the appliance to a boiler.
Refers to boiler manual for pump sizing based on head loss.
Discusses using glycol mixtures and their impact on capacity.
Guidelines for connecting to a tankless water heater.
Details wiring connections for thermostat, accessories, and pumps.
Instructions for wiring the external pump and 120VAC line.
Wiring examples for various scenarios.
Pre-operation checklist for installation verification.
Lists factory default settings for heating, cooling, and temperature.
Details default CFM settings for fan speed stages.
Explains operational sequences for heating, cooling, and pump modes.
Describes operation sequence for humidification.
Describes operation sequence for dehumidification.
How the appliance monitors return air temp for freeze protection.
Explains the meaning of different LED states.
How to retrieve diagnostic information using a USB stick.
Using the IBCconnect app for monitoring and adjustment.
Steps to download and install the IBCconnect app.
Guide to connecting the mobile device to the AHU's WiFi.
App-based configuration of modes and parameters.
Accessing model and version information via the app.
Method to configure multiple air handlers using a USB text file.
Recommended monthly and annual maintenance tasks for owners.
Tasks for professional maintenance, starting with fan assembly.
Step-by-step guide to safely remove the fan assembly.
Steps for safely removing and replacing the hot water coil.
Instructions for replacing the control board and reprogramming settings.
How to measure temperature sensor resistance for troubleshooting.
Guidance on safely measuring voltage on control boards.
Troubleshooting steps if the pump fails to energize.
Lists fault codes, their descriptions, and possible fixes.
Visual breakdown of appliance components with item numbers.
