Lennox CLIMATIC 40 User Manual page 28

ALARMS
ALARMS/WARNINGS CODES
DISP
DISP
DESCRIPTION
CL40/
DC40
DC41
Antifreeze alarm.
A
- AIRCOOLAIR / COMPACTAIR / FLATAIR circuit 
indoor piping temperature < 2ºC. Reset AUTO.
A2
Antifreeze alarm, circuit 2. (Aircoolair, Compactair,
Flatnair).
A2
Circuit 2 indoor piping temperature < 2ºC. Reset
AUTO.
High ambient temperature warning.
Ht ------
Ambient temperature > 40ºC.
Warning the low ambient temperature.
Lt ------
Disabled by default.
AHt ------ Not used.
HLt ------ Not used.
Low power supply warning.
ELS ------
Power supply < 20.4V.
High power supply warning.
EHS ------ Power supply > 26.4V.
Ed ------ Not used.
Ed2 ------
Not used.
SH ------
Not used.
SH2 ------ Not used.
nO ------ Not used.
nO2 ------ Not used.
LO ------ Not used.
LO2 ------ Not used.
HA ------ Not used.
HA2 ------
Not used.
EP ------ Not used.
EP2 ------ Not used.
ES ------ Not used.
ES2 ------ Not used.
EU ------ Not used.
EU3 ------
Not used.
Eb ------
Not used.
Eb2 ------
Not used.
L ------ Not used.
Ed ------ Not used.
Ed2 ------ Not used.
PH ------ Not used.
PH2 ------
Not used.
SUL ------
Not used.
Alarm, faulty communication between DC40 and Cli-
tEr OcH
matic 40. (AIRCOOLAIR/COMPACTAIR/FLATAIR)
Generic alarm.
AcH
Some active alarms on Climatic 40.
Ahu
Not used.
DC40 internal probe alarm.
AtE
Faulty internal probe.
CEr DC40 setting error.
UEr DC40 hardware error.
EFFECT RE
Close freecooling
Check:
air dumper and MAN/
- Indoor unit air filter.
stops circuit  AUTO
- Air damper working correctly.
compressors 
Close
freecooling air Check:
dumper and AUTO - Indoor unit air filter.
stops circuit  - Air damper working correctly.
compressors 2
Check location of ambient probe; avoid places where measurement of
------ AUTO
the ambient temperature by the internal
------ ------ Call Technical Service.
------ ------ Call Technical Service.
------ ------ Call Technical Service.
------
AUTO Check power supply of controller = 24V (see electrical diagram).
Unit stops AUTO Check power supply of controller = 24V (see electrical diagram).
------ ------ Call Technical Service.
------ ------
Call Technical Service.
------ ------
Call Technical Service.
------ ------ Call Technical Service.
------ ------ Call Technical Service.
------ ------ Call Technical Service.
------ ------ Call Technical Service.
------ ------ Call Technical Service.
------ ------ Call Technical Service.
------ ------
Call Technical Service.
------ ------ Call Technical Service.
------ ------ Call Technical Service.
------ ------ Call Technical Service.
------ ------ Call Technical Service.
------ ------ Call Technical Service.
------ ------
Call Technical Service.
------ ------
Call Technical Service.
------ ------
Call Technical Service.
------ ------ Call Technical Service.
------ ------ Call Technical Service.
------ ------ Call Technical Service.
------ ------ Call Technical Service.
------ ------
Call Technical Service.
------ ------
Call Technical Service.
- DC40 connections (see electrical diagrams).
Unit stops AUTO
Call Technical Service.
------ ------
Check Climatic 40 alarm code and act by accordingly.
------ ------
Call Technical Service.
------ ------
Call Technical Service.
------ ------ Call Technical Service.
------ ------ Call Technical Service.
27
ACTION
may be altered.