Honeywell RTH8500D Owner's Manual - Page 61

If .., Then .. - troubleshooting

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Troubleshooting Tips (Continued) If . . . Then . . . Heating system is Check Installer Setup Number 0170, Heating running in cool mode. and/or Cooling System Type, and make sure the setting matches the installed heating and/ or cooling system. Heating system does Check Installer Setup Number 0170, Heating not turn off and the and/or Cooling System Type, and make sure heat temperature the setting matches the installed heating and/ setting is set below or cooling system. the room temperature ("Heat On" is not shown in display). Red LED is on in the A system monitor is wired to the thermostat L upper right corner and terminal. See Heating or Cooling system does the Heat Pump is not not turn on in the Troubleshooting Tips. working. 61 69-1725-1

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61
69-1725-1
Heating system is
running in cool mode.
Check Installer Setup Number 0170, Heating
and/or Cooling System Type, and make sure
the setting matches the installed heating and/
or cooling system.
Heating system does
not turn off and the
heat temperature
setting is set below
the room temperature
(²Heat On³ is not
shown in display).
Check Installer Setup Number 0170, Heating
and/or Cooling System Type, and make sure
the setting matches the installed heating and/
or cooling system.
Red LED is on in the
upper right corner and
the Heat Pump is not
working.
A system monitor is wired to the thermostat L
terminal. See Heating or Cooling system does
not turn on in the Troubleshooting Tips.
Troubleshooting Tips (Continued)
If . . .
Then . . .