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NSZ/NDZ INSTALLATION MANUAL
The following tables show the codes that will be displayed on the different ComforTalk and FaultFlash thermostats.
FaultFlash Thermostats
ComforTalk Thermostats
Thermostat Display
Lockout Code
Thermostat Display
Lockout Code
Lockout Description
Lockout Description
2 Flashes
High Pressure Fault
"High Pressure" or "E2"
High Pressure Fault
3 Flashes
Low Pressure Fault
"Low Pressure" or "E3"
Low Pressure Fault
4 Flashes
Not Applicable
"E4"
Not Applicable
5 Flashes
Water Flow Fault
"Water Flow" or "E5"
Water Flow Fault
6 Flashes
Not Applicable
"E6"
Not Applicable
7 Flashes
Condensate Fault
"Condensate" or "E7"
Condensate Fault
8 Flashes
Voltage out of Range
"Voltage Range" or "E8"
Voltage out of Range
9 Flashes
RPM Fault
"RPM" or "E9"
RPM Fault
10 Flashes
Comfort Alert Compressor
Module Fault
"Comfort Alert" or "E10"
Comfort Alert Compressor
Module Fault
Lockout code 10 - see Comfort Alert module to determine the specific flash code for
compressor abnormalities.
These thermostats can be configured to display the lockout condition "text" or error number.
* A slow flash of 1 second on and off means the heat pump microprocessor SW2-1 is configured
for "Test Mode" or thermostat is miswired.
Lockout code 10 - see Comfort Alert module to determine the specific flash code for
compressor abnormalities.
TA32W01 and TP32W02 Thermostats
TP32U03, TP32U04 and TP32U05 Thermostats
Thermostat Displays
Fault Flash
When using a TA32W01 or TP32W02 thermostat and SW2-
8 is in the pulsing “L” position, FaultFlash will enable a user
to view the thermostat and count the fault indicator flashes
to determine the lockout condition the unit is experiencing.
ComforTalk
When using a TP32U03, 04 or 05 thermostat and SW2-8
is in the pulsing “L” position, ComforTalk will enable the
user to view the thermostat and determine the fault. The
Microprocessor Control cont.
thermostat can be configured to show either lockout text
or lockout codes.
The LED board on the front of the unit will display all
lockouts. The Low Pressure LED will flash for a low pres-
sure condition or a Comfort Alert fault. If the low pressure
lockout was caused by Comfort Alert codes 4, 6 or 7, then
the Comfort Alert will be flashing. If no Comfort Alert code
is visible, then it is a low pressure lockout.
