Alarms And Troubleshooting - Carel IR32M Manual

ALARMS AND TROUBLESHOOTING

Defective or incorrect operation
Equipment in the Infrared range are able to signal most incorrect operation automatically. When any
malfunction occurs the microprocessor initiates the following actions:
•
the malfunction is signalled on the display with an appropriate alarm signal. More specifically, the
display shows alternatively the alarm code and the temperature read by the sensor. If more than one alarm
occurs at the same time, they are signalled successively.
•
For some alarms an internal buzzer, if fitted, gives an audible warning.
•
For these alarms, the AUX relay, where fitted and if configured as an alarm output, will operate.
By pressing the
disappear only when the cause has been eliminated. The alarm codes are listed in the table below:
ALARM CODE
E0 active
E1 inactive
AL active
Ad active
L0 active
HL active
EA, EE, Eb inactive
Ed inactive
dF inactive
Description of the main alarm signals
FLASHING LED
Initiation of the relative function is delayed for a period while awaiting an external consent or while held up
by another process still in progress. For example, if a defrost is requested during continuous cycle operation,
the defrost will be held up until the continuous cycle is complete, and the appropriate LED (Def) will flash.
E0 FLASHING: control sensor error
•
sensor not working because the signal has been interrupted or there is a short-circuit
•
sensor not compatible with the equipment
•
parameter /0 does not correspond to unit's hardware set-up.
E1 FLASHING: evaporator sensor error
•
Sensor not working because the signal interrupted or there is a short circuit
•
sensor not compatible with the equipment
•
parameter /0 does not correspond to unit's hardware set-up.
AI FLASHING: immediate Multi-function digital input
•
check Multi-function input and parameter A4.
Ad FLASHING: delayed Multi-function digital input
•
Check Multi-function input and parameters A4 and A7.
LO FLASHING: low temperature alarm.
The sensor has registered a temperature further below the set value than the value given to parameter AL.
•
Check parameters AL, Ad and A0.
The alarm will cease as soon as the temperature returns within the limits selected (see parameter AL).
button the buzzer will stop and the relay disconnect, while the alarm code will
BUZZER AND AUX
RELAY
control sensor error
defrost sensor error
immediate external alarm
delayed external alarm
low temperature alarm
high temperature alarm
data memorisation error
defrost end by time-out
defrost in progress
CAUSE
ALL
IR32Y, IR32C, IRDRC, IR32P
ALL, if external alarm connected
ALL, if external alarm connected
ALL
ALL
ALL
IR32Y, IR32C, iRDRC, IR32P
ALL
39
MODELS APPLICABLE
Cod. +030220151 - Rel. 2.1 - 04/09/98