Alarms - Daikin LBB Série Manuel D'installation

defrosts.
ATTENTION
Do not use either hot water or any pointed, cutting, metal objects to remove ice blocks.
3. Display does not light up. Check:
- if there is power to the unit;
- if mains cable is connected properly;
- fuses inside the electric panel
4. Unit does not start operating when pressing ON/OFF key (the display is turned on): check
microdoor connection keeping in mind that the switch contact must be closed when the door
is closed.
Unsatisfactory efficiency of the unit:
WARNING:
Removal of protections during machine operation is absolutely forbidden. They have been
developed to safeguard the operator's safety.

12.4 Alarms

"EE" Flashing : Data failure Alarm output ON; Other outputs unchanged
"P1" Flashing : Thermostat probe failure; Alarm output ON; Compressor output according to
parameters "Con" and "CoF"
"P2" Alternating with room temperature : Evaporator probe failure; Alarm output ON; Other outputs
unchanged, Time controlled end defrost
"HA" Alternating with room temperature : Maximum temperature alarm Alarm output ON; Other outputs
unchanged
"LA" Alternating with room temperature : Minimum temperature alarm Alarm output ON; Other outputs
unchanged
"dA" Alternating with room temperature : Open door alarm Alarm output ON; Outlets according to the
parameter "odc"
"PAL" Alternating with room temperature : Pressure switch alarm Alarm output ON; All outputs OFF
"noL" Fixed or lighting Comunication alarm keyboard – mainboard All the outlets OFF
All the signals different from the ones specified in this manual indicate a serious damage to the
electronic control panel.
LARM OUTPUT
When an alarm condition occurs, the alarm signal is displayed till this condition does not disappears. It is possible
to inhibit the alarm output deactivation by setting the "tbA" parameter at "n"; in this case the alarm output
remains active till the alarm condition lasts.
ALARM RECOVERY
Probe alarm "P1" starts 30 seconds after the fault in the related probe; it stops automatically 30 seconds after
the probe restarts normal operation. Check connections before replacing the probe.
- faulty solenoid valve (in models with hot gas defrost);
- faulty defrost heater (in models with electric defrost);
- faulty defrost process. In this case some measures can be taken:
increase defrost termination temperature by some degrees, increase number of
If no defects are found in the unit check that: cold room doors are perfectly tight; there
is no cold dispersion; the cold room is used wisely; no unfrozen liquids or foodstuffs are
placed in the low temperature room; the evaporator is ice-free.
We recommend installation of the machines far from the doors especially when the cold
room is expected to be opened many times a day.
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