What To Do If The Ir32S, Irdrse/S0 Fails To Work; What To Do If The Ir32Y Fails To Work - Carel IR32M Manual

What to do if the IR32S, IRDRSE/S0 fails to work

PROBLEMS
compressor will not start :
•
power on
•
compressor LED off
compressor will not start :
•
power on
•
compressor LED flashing
temperature is outside set limits but
no alarm signalled and buzzer, if
fitted, does not sound
AL or Ad alarm signalled (Multi-
function input) without in fact being
active
alarm connected to Multi-function
input does not operate
defrost not activated :
•
power on
•
defrost LED off
manual defrost not activated and
defrost LED flashing
high temperature alarm given after
defrosting
when H1=1, display override
remains even after defrost
after changing a value, or
programming continues to work with
old values
cycle continuos is not actived
With the factory settings it can happen that within the 120 minutes delay set (Ad) the unit fails to
reach the range of +/- 10 degrees (AL and AH) around the set-point selected for the temperature
alarm. If this occurs we suggest to increase the delay by changing parameter Ad.

What to do if the IR32Y fails to work

CAUSE
if H1=0
wrong mode: heating instead of
cooling or vice versa
compressor delay operating
alarm delay operating
Multi-function input generates
alarm as power goes on
alarm delay operating or
programming error
if H1=1
•
defrost cycle too short (dp)
•
interval between defrosting
dl=0: in this case defrost will
not be activated
compressor protection delays
operating
alarm delay after defrost too short
or alarm threshold too low
ambient temperature has not yet
reached value set, or time d8 has
not yet elapsed
unit has not yet updated of re-start
unit, parameters has not been
satisfactorily completed, pressing
it is necessary to press
.
41
CHECK
parameter r3
if A4=3, check state of digital input
parameter c0, c1 and c2
check Ad
check connection of input and
whether it is off in normal operation
see whether A4=1 or A4=2;
if A4=1 check state of digital input;
if A4=2 check A7
parameter dP and dl
parameter d9 (select d9=1, see
instructions)
parameters d8 and AH
wait or reduce d8
switch off and parameter, control or
programme again correctly
see note on page 8
before
Cod. +030220151 - Rel. 2.1 - 04/09/98