SPECIFICATIONS
Rating: 120 V/240 V AC, 60 Hz
Max. load: 16.6 A
4000 W @ 240 V or
2000 W @ 120 V
Min. load: 500 W @ 240 V
TROUBLESHOOTING GUIDE
Specifications:
Number of programs: 7-Day with 4 settings per day
Temperature display range: -9.9°C - 70°C (14°F - 158°F)
Temperature setting range: 5°C to 35° C (41°F to 95° F)
PROBLEM
SOLUTION
LCD screen is blank or
abnormal.
- Check if the circuit breaker is open.
- Check if there has been a power failure.
- Check that the thermostat is wired to a 500 W or greater circuit.
- Check the wiring installation with a certified electrician.
- Press the RESET button under the faceplate (see page 8).
26
Programming Issues:
Heating is not activated
at the programmed times.
- Review the programming guide to ensure the programs have been entered correctly.
- Check that the clock has been set to the correct time. (e.g.: a.m./p.m. reversed)
- Check if there has been a power failure.
- PROGRAM RESET: Press SET for 3 seconds to enter the option mode,
then press PROG for 3 seconds to clear programs settings only.
- RESET ALL: Press and hold the HOLD and the RESET button at the same time
to restore all settings to factory default (see page 8).
Summary of Contents for HTM621
Page 4: ...Installation instructions 2...
Page 11: ...9 Programming...
