Lennox CLIMATIC 40 User Manual page 27

ALARMS
ALARMS/WARNINGS CODES
DISP
DISP
DESCRIPTION
CL40/
DC40
DC41
High pressure switch alarm, circuit .
This alarm may indicate the following problems:
- High pressure switch protection.
HP
- Compressor stopped.
- Excessive refrigerant charge.
HP
High pressure switch alarm, circuit 2.
HP2
The same as previous alarm but this time referring to
circuit 2.
Low pressure switch alarm, circuit .
This alarm may indicate the following problems:
LP
- Low refrigerant.
- Outdoor fan stopped.
LP
- Low pressure switch protection.
Low pressure switch alarm, circuit 2.
LP2
The same as previous alarm but this time referring to
circuit 2.
Indoor fan thermal protection alarm:
TP
- Fan thermal protection open.
T
- Faulty power supply.
TC
Not used.
TC2
Not used.
LA ------
Not used.
FLb ------
Not used.
B probe error.
E
Faulty probe or connection.
B2 probe error.
E2
Faulty probe or connection.
B3 probe error.
E3
Faulty probe or connection.
B4 probe/pressure transducer error.
E4
Faulty probe or connection.
E00
E5
Not used.
B6 probe error.
E6
Faulty probe or connection.
B7 probe error.
E7
Faulty probe or connection.
B8 probe/pressure transducer error.
E8
Faulty probe or connection.
Warning.
Hcl-4 Hc
Compressor operating time limit exceeded.
Disabled by default.
Warning.
HF ------
Indoor fan operating time limit exceeded.
Disabled by default.
Warning.
EPr ------
Climatic 40 hardware error.
Warning.
Epb ------
Climatic 40 hardware error.
ESP ESP
Expansion board error.
Warning.
EL-2 ------
Condensing fan speed control hardware error.
Warning.
Circuit -2 defrost ends due to maximum time (8 mi-
dF-2 ------
nutes).
EFFECT RE
Reset and check:
- Coil is clean and not blocked.
AUTO/
- Outdoor fan during cooling cycle.
MAN.
Circuit 
- Indoor fan during heating cycle.
compressors
- Compressor protection.
After 3
stop
times in
- Condenser air temperature is very high.
 hour
- Refrigerant charge.
Circuit 2 AUTO/
MAN.
compressors The same as previous alarm but this time referring to circuit 2.
stop
After 3t/h
Reset and check:
- Coil is clean and not blocked.
AUTO/
- Outdoor fan during heating cycle.
MAN.
Circuit  - Indoor fan during cooling cycle.
compressors - Fuses of the fan.
After 3
stop - Evaporation air temperature is very low.
times in
- Check refrigerant charge.
 hour
- Expansion valve.
Circuit 2 AUTO/
MAN.
compressors The same as previous alarm but this time referring to circuit 2.
stop
After 3t/h
Reset and check:
Unit stops MAN. - Fan.
- Power supply.
------ ------
Call Technical Service.
------ ------
Call Technical Service.
------ ------
Call Technical Service.
------ ------
Call Technical Service.
Check connection of B1 probe (see electrical diagram), check continui-
Unit stops AUTO
ty and change the faulty component.
Check connection of B2 probe (see electrical diagram), check continui-
Unit stops AUTO
ty and change the faulty component.
Check connection of B3 probe (see electrical diagram), check continui-
Unit stops AUTO
ty and change the faulty component.
Check connection of B4 probe/pressure transducer (see electrical
Unit stops AUTO diagram), check continuity and change the faulty component.
------ ------
Call Technical Service.
Check connection of B6 probe(see electrical diagram), check continuity
Unit stops AUTO
and change the faulty component.
Check connection of B7 probe (see electrical diagram), check continui-
Unit stops AUTO
ty and change the faulty component.
Check connection of B8 probe/pressure transducer (see electrical
Unit stops AUTO diagram), check continuity and change the faulty component.
Check:
------
AUTO - Compressor operating time (parameter C0).
- Compressor operating time limit (par. C5).
Check:
------
AUTO - Indoor fan operating time (parameter C5).
- Indoor fan operating time limit (par. C5).
------
AUTO Call Technical Service.
Unit stops AUTO Call Technical Service.
Check:
- Green LED is on inside the board.
Unit stops AUTO
- J4-J9 connections (see electrical diagram).
Call Technical Service.
Outdoor fan at
- Check CFM board connections (see electrical diagram).
maximum AUTO
Call Technical Service.
speed.
------
AUTO
26
ACTION