Filter
Top Products
14
Installation Manual 7602-443 COMMUNICATING, PROGRAMMABLE THERMOSTAT Heat Controller, Inc.
HE036 S N - - - - - 0 1 2 3
LAST 5 FAULTS
LT1 LOW WATER TEMP
NO FAULT
NO FAULT
NO FAULT
NO FAULT
NEXT
PREVIOUS SELECT
9.5 CLEAR FAULT HISTORY
Clear Fault History will clear all fault codes stored in the
thermostat as well as the fault history in any connected
communicating controls (DXM2/AXM).
9.6 MULT-UNIT DIAGNOSTICS
If multiple units are connected to one thermostat when
Manual Operation, Control Diagnostics, or Dipstick
Confi guration is selected, the service personnel will see a
screen to select a specifi c unit by the last 4 digits of its serial
number.
NOTE: Multiple units may be connected directly to the 7602-
443 thermostat or connected to one another in series, as
shown by the fi gure below.
9.4.5 Possible Causes
Possible causes as to why the fault occurred
NOTE: If multiple units are connected to one thermostat, refer
to section 9.7.
POSSIBLE FAULT CAUSES
LOW WATER COIL TEMP
LOW WATER TEMP - HTG
LOW WATER FLOW - HTG
LOW REFRIG CHARGE - HTG
INCORRECT LT1 SETTING
BAD LT1 THERMISTOR
PREVIOUS
9.7 MULT-UNIT FAULT INFO
When multiple units are connected to one thermostat,
UNLIKE Mult-Unit Diagnostics, the service personnel views
each units’ fault information by selecting the next option.
10.0 Restore Defaults
The thermostat will reset all settings, excluding the
thermostat confi guration settings (section 2), to their factory
defaults.
Two
connections
on DXM2
board to allow
for multi-unit
installation
Or
CONTROL DIAGNOSTICS
HE024 S N - - - - - 1 2 3 4
HE024 S N - - - - - 5 6 7 8
HE036 S N - - - - - 9 0 1 2
PREVIOUS SELECT