HBX THM-0500 Touch Screen Programmable Thermostat Instruction Manual
TROUBLESHOOTING GUIDE
ISSUE
POSSIBLE CAUSES & RESOLUTIONS
Blank Screen
• Check the ZON-0550 power
• Check wiring polarity between the THM-
0300/THM-0500 and ZON-0550 module.
• Ensure zones 1 and 3 damper/4-pipe is set
correctly.
Stage 2 won’t
come on
• Check stage delay in system setup for
proper time.
• In special functions ensure you have
selected correct thermostat type.
Demand not
coming on
• Demands may take up to 5 minutes to
operate due to P.I.D algorithm.
• Verify wiring on the ZON-0550 module.
• Check priorities settings in zone setup.
• Check the changeover settings
Temperature
not displaying
correct value
• If it is showing dash lines ensure that the
proper thermostat mode is selected in mode
setup.
• Ensure external sensor(s) is wired correctly.
• Make sure the external room dipswitch on
the board is in the correct position.
Target
• Check the setback schedule
changing
• If you’re in auto changeover, then the
target can change to either heating target
or cooling target based on actual room
temperature.
19
| General | Details |
|---|---|
| Name | HBX THM-0500 Touch Screen Programmable Thermostat Instruction Manual |
| Make | HBX |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.52 MB |
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