Honeywell 4500 Thermostat User Manual


 
4500 Thermostat Installation Instructions
6-2
4500 or premises thermostat fails to control the HVAC system.
1. Check set points in 4500 and premises thermostat to ensure they are set
properly.
2. If BYPASS of 4500 via its front panel switch causes existing thermostat
to work properly, then problem is in the 4500 wiring or within the 4500
itself. If the existing thermostat does not work, check its wiring and
battery, if any.
3. Check wiring connections. Refer to Summary of Connections diagram.
Heating and cooling set point does not change according to settings when
the system is armed or disarmed.
1. Verify temperature settings with the # 99 thermostat mode and that set-
back is programmed on.
2. Verify the entry for “control panel type” (field 02) using the 4286 phone
programming mode.
3. If the control panel uses non-addressable keypads, verify that the
“monitored keypad address” (set in phone programming mode, Field
01) is set to 31.
4. If the control panel uses addressable keypads, verify that the
“monitored keypad address” (set in 4286 phone programming mode
field 01):
a) Matches a control panel “device address” assigned to a keypad,
and
b) Is assigned to the partition where the 4500 thermostat is
physically located.