Alert Codes - Lennox iComfort M30 Installation And Setup Manual

Alert Codes

Alert Priority
Code Condition
18 Minor
19 Minor
29 Critical
30 Moderate
Table 7. Alert Codes and Reminders
Display Message Condition
The outside temperature is
Low Ambient HP below the level where the
Heat Lockout heat pump is programmed
to heat the home.
The outside temperature is
High Ambient
higher than the level where
Auxiliary Heat
the furnace or electric heat
Lockout
is programmed to work.
Over Temperature Indoor temperature that is
Protection higher than 99ºF.
Low Temperature Indoor temperature that is
Protection lower than 40ºF.
System Action
When the thermostat is in heat
mode and a heat demand
exists, if the temperature
measured by outdoor sensor
is below the low balance point,
the heat pump is turned off and
only the electric heat or gas/oil
heat is used.
NOTE: This alert message
is not displayed.
When the thermostat is in heat
mode and a heat demand
exists, if the temperature
measured by outdoor sensor is
above the high balance point,
the electric heat or gas/oil heat
is turned off and only the heat
pump is used.
NOTE: This alert message
is not displayed.
• All stages of heat and cool
are turned off by safety relay.
• Heating and cooling
operation is not allowed.
• This error is displayed in
notification screen.
30
Clear/Recovery
If the temperature
measured by outdoor
sensor is rises above low
the balance point, then any
available heat source (heat
pump, electric heat or gas/
oil heat) can be used.
If the temperature
measured by outdoor
sensor drops below the
high balance point, then
any available heat source
(heat pump, electric heat
or gas/oil heat) can be
used.
If room temperature goes
less then 99°F, it will start
working again.
If room temperature goes
more then 40°F, it will start
working again.