Alarm Codes - Lennox Climatic 200 Installation Operating & Maintenance Manual

ALARM CODES

VIS. DESCRIPTION
Compressor thermal protection alarm
compressor 1 circuit 2:
E23
- Compressor thermal protection open.
- Faulty power supply.
E24
Fan thermal protection alarm.
Refrigerant piping temperature probe alarm (St6)
circuit 2.
E27 It may indicate:
- Refrigerant piping temperature probe open or
without connecting.
High pressure / high temperature alarm.
It is activated when refrigerant piping temperature
E31
probe (St6) detects a temperature higher than
70ºC and the high pressure switch has not been
activated.
Low pressure / low temperature alarm.
It is activated when refrigerant piping temperature
E32
probe (St6) detects a temperature lower than
-30ºC and the low pressure switch has not been
activated.
Compressor 4 thermal protection alarm.
E33 - Compressor thermal protection open.
- Faulty power supply.
Inlet water temperature probe alarm (St1).
It may indicate:
E40
- Inlet water temperature probe open or without
connecting.
Water flow switch alarm.
E41
It indicates low water flow in the unit.
E42 St4 probe error.
Alarm of configuration error.
E45
It may indicate that the terminal is broken.
High inlet water temperature. It indicates:
Inlet water temperature probe detects
E46
temperatures higher than 90ºC during more than
one minute.
(*) Unit stops except water pump.
EFFECT RE
Press the ON/OFF button until the alarm
disappears; if alarm shows up again, check
Compressor 1
continuity and change the faulty component.
circuit 2
MAN • Check refrigerant charge.
stops
• Check the refrigerant circuit is not blocked.
• Check connections and fuses.
• Check power supply.
Circuit 2 fan
Press the ON/OFF button until the alarm
and circuit 2
MAN disappears; if alarm shows up again, check
compressors
continuity and change the faulty component.
stop
These protections are automatic reset; if alarm
shows up again, check:
Unit
• Connection of refrigerant piping temperature
AUTO
stops
probe (St6) (see electrical diagram), check
continuity and change the faulty
component.
Press the ON/OFF button, until the alarm
disappears; if alarm shows up again, check:
Circuit 2 • Working of high pressure switch.
compressors • Coil clean and no blocked.
AUTO
stop • Water flow on the cooling cycle.
• Check fuses of the fan.
• Outside temperatures very high.
• Check refrigerant charge.
• Check low pressure switch working.
• Coil clean and no blocked.
Circuit 2
• Check water flow on the cooling cycle.
compressors AUTO
• Check fuses of the fan.
stop
• Outside temperatures very low.
• Check refrigerant charge.
Press the ON/OFF button until the alarm
disappears; if alarm shows up again, check
Compressor 2 continuity and change the faulty component.
circuit 2 • Check refrigerant charge.
MAN
stops • Check the refrigerant circuit is not
blocked.
• Check connections and fuses.
• Check power supply.
Check connection of inlet water temperature
Unit
AUTO probe (St1) (see electrical diagram), check
stops
continuity and change the faulty component.
• Check water circuit is not blocked.
Unit
AUTO • Check water filter.
stops
• Check water pump operation.
(*)
Check the St4 probe connection or cancel
Unit
AUTO
Dynamic set point if the unit does not incorporate
stops
St4 probe.
These protections are automatic reset; if the
Unit
AUTO alarm shows up again, check the continuity and
stops
change the faulty component.
These protections are automatic reset; if the
alarm shows up again, check connection of
Unit
AUTO inlet water temperature probe (St1) (see
stops
electrical diagram), check the continuity and
change the faulty component
18
ACTION