FH25S - Thermostat GENERAL Life - Free user manual and instructions
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| Product Type | Thermostat |
| Brand | GENERAL Life |
| Model | FH25S |
| Dimensions (H x W x D) | Approximately 80 x 80 x 25 mm |
| Weight | Approximately 100 g |
| Power Supply | 2 x AA batteries or 24 VAC |
| Display Type | LCD |
| Temperature Range | 5°C to 35°C |
| Accuracy | ±0.5°C |
| Programmable | Yes, 7-day programmable |
| Modes | Heat, Cool, Auto, Fan Only |
| Fan Control | On, Auto, Circulate |
| Compatibility | Most 24V gas, oil, electric, heat pump systems |
| Battery Low Indicator | Yes |
| Keypad Lock | Yes (child lock) |
| Maintenance | Wipe with a dry cloth; do not use harsh chemicals |
| Spare Parts | AA batteries (user-replaceable) |
| Repairability | Limited; refer to manual or contact support |
| Installation | Wall mount, requires wiring (see manual) |
| Warranty | Standard 1 year (check manual) |
Frequently Asked Questions - FH25S GENERAL Life
How do I install the FH25S thermostat?
Turn off power to your HVAC system. Remove old thermostat, label wires, and connect them to the FH25S terminals according to the manual. Mount the base plate, attach the thermostat, and restore power. Follow the setup wizard for basic configuration.
How do I set the time and day on the FH25S?
Press the Menu button, navigate to Time/Date, and use the up/down arrows to set the correct time and day. Confirm by pressing OK.
How do I program a weekly schedule?
Press Menu, select Schedule. Choose a day, then set up to 4 time periods (Morning, Day, Evening, Night) with desired temperatures. Repeat for other days or copy a day’s schedule to others.
Why is my thermostat not turning on?
Check if batteries are installed correctly and have charge. For wired units, ensure power is on at the breaker and that the C-wire (common) is connected. Replace batteries if needed.
How do I switch between heating and cooling?
Press the Mode button repeatedly to cycle through Heat, Cool, Auto, and Off. The display will show the active mode.
What does the 'Low Battery' icon mean?
It indicates the batteries are low and need replacement. Replace with two fresh AA alkaline batteries to ensure proper operation. The thermostat will retain settings for a short time during battery change.
Can I use the FH25S with a heat pump?
Yes, the FH25S is compatible with most heat pump systems. In the installer setup, select the heat pump option and configure the reversing valve (O/B) as needed.
How do I reset the thermostat to factory defaults?
Press and hold the Menu and Up buttons simultaneously for 10 seconds until the screen resets. All settings will be cleared, and you’ll need to reconfigure.
What temperature range does the FH25S support?
The thermostat can be set between 5°C and 35°C in heating mode, and between 10°C and 37°C in cooling mode (typical). Exact limits depend on HVAC system.
How do I clean the FH25S thermostat?
Use a soft, dry cloth to gently wipe the surface. Do not use water, solvents, or abrasive cleaners, as they may damage the electronics.
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