Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your VIVOHOME AutoFlow Bathroom Exhaust Fan with Humidity Sensor, Model VH1797. This fan features an energy-saving EC motor, constant airflow technology, and a humidity sensor for efficient ventilation in bathrooms, laundry rooms, and other suitable indoor spaces.
Safety Information
Please read and understand all instructions before beginning installation. Failure to follow these instructions may result in electric shock, fire, property damage, or personal injury.
- Always disconnect power at the service panel before wiring or servicing the fan.
- All wiring must be performed by a qualified electrician in accordance with all applicable electrical codes and standards.
- Wear safety glasses and gloves during installation.
- Ensure the fan is properly grounded. The fan is designed with a grounded-free connection and dual insulation for safety.
- Do not install this fan in a cooking area.
- This fan is intended for general ventilating use only. Do not use to exhaust hazardous or explosive materials and vapors.
Package Contents
Verify that all components are present and undamaged before proceeding with installation.
- VIVOHOME AutoFlow Bathroom Exhaust Fan Housing
- Fan Motor Assembly
- Grille/Cover with LED Light
- Duct Connector (4-inch)
- Installation Brackets/Rails
- Mounting Hardware (screws, wire nuts)
- Cutout Template
- User Manual
- Remote Control (batteries not included)
Setup & Installation
The VIVOHOME AutoFlow Bathroom Exhaust Fan is designed for easy installation, fitting standard 10.2 x 10.2 inch ceiling openings. It includes a flexible mounting frame and a cutout template for accurate placement.
Installation Steps
- Prepare the Ceiling Opening: Use the provided cutout template to mark and cut a 10.2 x 10.2 inch opening in the ceiling. For replacement, the fan fits existing 10-10.4 inch cutouts.
- Mount the Housing: Expand the four brackets on the fan housing to secure it to the ceiling joists. Ensure the mounting clips are fully secured. Multiple screw holes are available for various setups.
- Wiring: Loosen the short screw and remove the wire cover. Pull house wires (120V AC) through the knockout hole. Use quick connectors to join the house wiring (from the wall switch) to the fan wires (neutral, fan, light, ground). Carefully tuck connected wires back into the wiring compartment and reattach the wire cover.
- Connect Ducting: Connect a 4-inch circular duct (not included) to the duct connector. Seal the joint with a clamp (optional) or duct tape (not included) for an airtight connection. Insert the duct connector back into the fan housing.
- Install Motor Assembly: Lift out the motor assembly from the housing (if not already removed). Reinstall it, securing with the screws. Plug the motor assembly into the power unit.
- Attach Grille: Squeeze the springs on the grille together and insert them into the housing slots. Connect the LED panel interface plug. Press the spring clips and snap the panel into the slot to finish installation.
Installation Videos
Operating Instructions
The VIVOHOME AutoFlow fan features intelligent airflow control and a humidity sensor to optimize ventilation.
Humidity Sensor & AutoFlow Design
The fan automatically adjusts its speed based on detected humidity levels:
- Quiet Mode (30 CFM): Operates when humidity is below 50%.
- Normal Mode (110 CFM): Activates when humidity is between 50% and 80%.
- Turbo Mode (160 CFM): Engages when humidity is 80% or higher to rapidly clear steam and odors.
This constant airflow technology ensures stable and reliable ventilation even against duct bends or dust buildup.
Remote Control
The fan can also be controlled manually via the included remote control, offering multiple speed settings beyond the automatic humidity-based modes.
Maintenance
Regular cleaning and maintenance will ensure optimal performance and longevity of your exhaust fan.
Cleaning the Grille and Fan Blades
- Disconnect Power: Always turn off power at the circuit breaker before cleaning.
- Remove Grille: Gently pull down the grille to release the spring clips. Disconnect the LED panel interface plug.
- Clean Grille: Wash the grille with mild soap and water. Rinse thoroughly and dry completely before reinstallation.
- Clean Fan Blades: Use a soft cloth or brush to remove dust and debris from the fan blades and interior of the housing. Do not use abrasive cleaners or solvents.
- Reinstall: Reconnect the LED panel plug, squeeze the spring clips, and push the grille back into place until it snaps securely. Restore power.
Troubleshooting
If you experience issues with your VIVOHOME AutoFlow Bathroom Exhaust Fan, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Fan does not turn on | No power to the fan; Loose wiring connection; Faulty switch or remote. | Check circuit breaker; Verify wiring connections; Test switch/remote or replace if necessary. |
| Fan is noisy | Loose mounting screws; Obstruction in fan blades; Dirty fan blades; Improper ducting. | Tighten mounting screws; Remove any obstructions; Clean fan blades; Check ducting for kinks or blockages. |
| Poor ventilation | Blocked ducting; Incorrect fan speed setting; Humidity sensor malfunction. | Check ducting for obstructions; Adjust fan speed via remote; Ensure humidity sensor is clean and unobstructed. |
| Light does not work | Loose wiring connection; Faulty LED panel. | Check light wiring connection; Contact support for LED panel replacement if faulty. |
Specifications
| Feature | Detail |
|---|---|
| Brand | VIVOHOME |
| Model Number | VH1797 |
| Air Flow Capacity | 30-110-160 Cubic Feet Per Minute (CFM) |
| Motor Type | Brushless EC Motor |
| Power Source | AC/DC |
| Voltage | 120 Volts |
| Wattage | 45 watts |
| Noise Level | 0.1 - 1.5 Sones |
| Number of Speeds | 3 (Auto) / 6 (Manual via Remote) |
| Mounting Type | Ceiling Mount |
| Product Dimensions | 30D x 30W x 14.5H Centimetres (Housing: 8.9 × 8.9 × 5.7 inches) |
| Ceiling Opening | Standard 10.2 × 10.2 inches (fits existing 10-10.4 inches) |
| Item Weight | 1.9 Kilograms |
| Material Type | Acrylonitrile Butadiene Styrene, Polypropylene |
| Special Features | Humidity Sensor, Constant Airflow, Low Noise, Energy-Saving |
Warranty & Support
This VIVOHOME product comes with a 1-year warranty from the date of purchase.
For technical support, warranty claims, or any questions regarding your product, please contact VIVOHOME customer service. Refer to your purchase documentation or the VIVOHOME website for the most current contact information.