Aprilaire 8538 Digital Heat Cool Thermostat Owner’s Manual
| General | Details |
|---|---|
| Name | Aprilaire 8538 Digital Heat Cool Thermostat Owner’s Manual |
| Make | Aprilaire |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.19 MB |
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Aprilaire 8538 Manual: Questions and Answers
What is the difference between Day and Night settings on the Aprilaire 8538?
The thermostat stores two heating temperatures and two cooling temperatures. Day setting shows a sun icon, Night setting shows a partial moon icon. Press Day/Night button to switch between them. Owner's Manual, p. 5
What do the flame and snowflake icons mean on a thermostat display?
The flame flickers when the system calls for heat. The snowflake flashes when the system calls for cooling. Owner's Manual, p. 4
What do the icons on the Aprilaire 8538 display mean?
Full sun shows Day setpoint is active. Partial moon shows Night setpoint is active. Fan icon appears only during continuous fan mode. Owner's Manual, p. 4
How long is the Aprilaire 8538 warranty coverage?
Two years from the date of installation, provided the unit is found defective within that period and returned within thirty days after the warranty expires. Owner's Manual, p. 14
Will the Aprilaire 8538 warranty cover labor costs if something breaks?
No. The warranty covers only replacement of the defective thermostat itself, not labor. It also does not apply to defects caused by your installer. Owner's Manual, p. 14
Can I get a replacement Aprilaire 8538 under warranty after two years?
You have a thirty-day window after the two-year period ends. Contact your original supplier or Research Products Corporation in Madison, Wisconsin with your installation date and defective unit. Owner's Manual, p. 14
Is the Aprilaire 8538 warranty void if a non-qualified contractor installed it?
Yes. The warranty is void if installation was not performed by a qualified heating and air conditioning contractor, and all implied warranties are then excluded. Owner's Manual, p. 14
What is the minimum temperature difference between Heat and Cool settings on the Aprilaire 8538?
2°F minimum. The Cool setting must always be at least 2°F higher than the Heat setting for both Day and Night. Owner's Manual, p. 11
How do I lock the keypad on the Aprilaire 8538 to prevent tampering?
Access the DIP switches inside the thermostat on the circuit board by referring to the Installation Instructions, then change switch no. 2 from OFF to ON.
- Locate the DIP switches on the circuit board inside the thermostat.
- Change the Keypad Lock DIP switch (switch no. 2) from the factory OFF position to ON. Owner's Manual, p. 12
How should I clean the outside of my thermostat without damaging it?
Spray plain water or non-abrasive household cleaner like glass cleaner onto a soft cloth, then wipe the surface. Never spray cleaner directly onto the unit or let any liquid enter the interior. Owner's Manual, p. 13
How can I tell if the air conditioning is running on my Aprilaire 8538?
A snowflake icon appears on the display and flashes when the air conditioning is active. Owner's Manual, p. 9
How do I know if the furnace is running on my Aprilaire 8538 thermostat?
A flame icon appears on the display and flickers when the furnace is running. Owner's Manual, p. 9
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