1. Introduction
This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your Lehmann 3000W Electric Fan Heater, model LTOHE-3020. Please read these instructions carefully before using the appliance and retain them for future reference.
Important Safety Instructions
- Always ensure the heater is placed on a stable, level surface.
- Do not cover the heater or obstruct its air inlets/outlets.
- Keep flammable materials at least 1 meter (3 feet) away from the heater.
- Do not use the heater in bathrooms, laundry areas, or similar wet locations.
- Unplug the heater from the power outlet when not in use or before cleaning.
- Do not operate the heater with a damaged cord or plug, or after the heater malfunctions or has been dropped or damaged in any manner.
- This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
2. Product Overview
The Lehmann LTOHE-3020 is a portable electric fan heater designed for rapid heating of small to medium-sized spaces. It features adjustable heat settings, a thermostat, and a robust design for durability.
Figure 2.1: Front view of the Lehmann 3000W Electric Fan Heater, showing the protective grille and control knobs.
Components
- Control Knobs: Two rotary knobs for power/fan selection and thermostat adjustment.
- Protective Grille: Front grille covering the heating elements and fan.
- Carry Handle: Integrated handle for easy transport.
- Adjustable Stand: Yellow metal stand allowing for tilt adjustment.
- Air Inlet: Rear opening for air intake.
Figure 2.2: Close-up view of the control panel, showing the power/fan selector and thermostat knob.
3. Setup
- Unpack: Carefully remove the heater from its packaging. Retain packaging for storage or return if necessary.
- Placement: Place the heater on a firm, level, and heat-resistant surface. Ensure there is at least 1 meter (3 feet) of clear space around the heater to allow for proper airflow and to prevent fire hazards. Do not place it directly under a power outlet.
- Power Connection: Ensure the heater is switched off (control knob set to '0') before plugging it into a suitable 230V AC, 50Hz power outlet. The outlet must be properly grounded and capable of handling a 3000W load.
- Tilt Adjustment: The heater's stand allows for angle adjustment. Loosen the side knobs, adjust the heater to the desired tilt, and then securely tighten the knobs.
4. Operating Instructions
Your Lehmann fan heater offers multiple operating modes for versatile use.
Control Knob Functions
- Left Knob (Power/Fan Selector):
- 0: Off
- Fan Only: Operates the fan without heat (30W).
- Heat Level 1: Low heat setting.
- Heat Level 2: Medium heat setting.
- Heat Level 3: High heat setting (3000W).
- Right Knob (Thermostat): Adjusts the desired room temperature. The heater will cycle on and off to maintain this temperature.
Figure 4.1: Illustration of the heater operating in 3000W hot air mode and 30W fan-only (cold air) mode.
Starting the Heater
- Plug the heater into a suitable power outlet.
- Turn the right (thermostat) knob to the maximum setting ('MAX').
- Turn the left (power/fan selector) knob to your desired heat level (1, 2, or 3) or to the fan-only setting. The heater will begin to operate.
Setting the Thermostat
- Once the room reaches a comfortable temperature, slowly turn the right (thermostat) knob counter-clockwise until the heater turns off.
- The heater will now automatically cycle on and off to maintain this set temperature.
Turning Off the Heater
- Turn the left (power/fan selector) knob to the '0' position.
- Unplug the heater from the power outlet. Allow the heater to cool down completely before moving or storing it.
5. Maintenance
Regular cleaning and proper storage will ensure the longevity and efficient operation of your heater.
Cleaning
- Always unplug the heater and allow it to cool completely before cleaning.
- Wipe the exterior surfaces with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Use a vacuum cleaner with a brush attachment to remove dust from the grilles and air inlets/outlets.
- Never immerse the heater in water or any other liquid.
Storage
- Store the heater in a cool, dry place when not in use.
- If possible, store it in its original packaging to protect it from dust and damage.
6. Troubleshooting
Before contacting customer support, please refer to the following table for common issues and their solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Heater does not turn on. | No power supply. Power/fan selector is set to '0'. Overheat protection activated. | Check if the plug is securely in the outlet. Ensure the power outlet is functional. Turn the selector knob to a heat setting or fan-only. Unplug, let cool for 30 minutes, then restart. |
| No heat output. | Power/fan selector is set to 'Fan Only'. Thermostat setting is too low. | Turn the selector knob to a heat setting (1, 2, or 3). Increase the thermostat setting. |
| Heater cycles on and off frequently. | Thermostat is set too close to the ambient room temperature. | Adjust the thermostat to a higher setting if more heat is desired, or a lower setting if the room is too warm. |
| Reduced airflow. | Dust or debris obstructing grilles. | Unplug the heater and clean the grilles as described in the Maintenance section. |
7. Specifications
Technical details for the Lehmann LTOHE-3020 Electric Fan Heater.
Figure 7.1: Dimensions of the Lehmann 3000W Electric Fan Heater.
| Feature | Detail |
|---|---|
| Brand | LEHMANN |
| Model Number | LTOHE-3020 |
| Power Output | 3000 W |
| Voltage | 230 Volts |
| Number of Heat Settings | 3 (plus fan-only mode) |
| Special Feature | Manual Thermostat |
| Color | Black |
| Product Dimensions (L x W x H) | 23 cm x 16.5 cm x 22 cm |
| Item Weight | 2.4 Kilograms |
| Recommended Use | Indoor (Office, Desk, Garage, Home) |
8. Warranty and Support
LEHMANN products are manufactured to high-quality standards. For information regarding warranty coverage, please refer to the warranty card included with your purchase or visit the official LEHMANN website. If you encounter any issues not covered in the troubleshooting section, or require further assistance, please contact LEHMANN customer support through the details provided on the product packaging or the official website.
