Diagnostic Information - Lennox ELITE Series Installation Instructions Manual

Diagnostic Information

Priority
0:high
Error Screen
1:middle
Code Text
2:low
high
4 temperature
protection
temperature
5
sensor error
memory
7
error
memory
8
error
Message
Condition
Type
High temperature protec­
tion when outdoor ambient
0 critical
temperature exceeds 96°F
(35.6°C).
Local temperature sen­
sor is out of range -40°F
to 158°F.
There is a finite differ­
0 critical
ence between main ther­
mistor and sub-thermis­
tor which is greater than
5°F.
EEPROM error
0 critical
(Power ON)
0 critical EEPROM error (Operating)
System Action
All stages of heat are turned off
by safety relay. This error is
displayed on notification
screen.
Indoor temp is displayed as "--"
on the home screen. This will
STOP all temperature related
operation.
All stages of heat are turned off
by safety relay.
This error is displayed on notifi­
cation screen.
System will restore using to En­
ergy Star defaults and resume
operations. This error is dis­
played on notification screen.
System will operate in normal
mode operation until power off.
This error is displayed in notifi­
cation screen.
14
Action to Clear / Recovery
Condition
Once temperature drops
below 96°F (35.6°C), the
system resume operation.
Either thermostat will have
to be replace or if the sen­
sor returns to normal oper­
ating range, the error mes­
sage will automatically clear
and the system will resume
operation.
Thermostat will need to be
replaced.