Carel heaterSteam UR Series, User Manual

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33
ENG
“heaterSteam” +0300075EN - rel. 1.2 - 29.09.2015
alarm code cause
solution
(once having tried the suggestion, if the problem persists
, contact the CAREL service department)
action reset alarm relay
NTC probe
NTC probe for measur-
ing the water temper-
ature not connected (if
featured)
•
check the pre-heating operation and the setting of parameters b1,
b2, b3 (see Reading and programming the parameters);
•
check the connections to the terminal block on the boiler cover
disablement
pre-heating
automatic active
(*)
Cleaning the boiler
scheduled mainte-
nance signal stop the machine and carry out complete maintenance.
of the humidifi er and then reset the hour counter (see chapter 4)
signal only manual
not
active
Drain
no drain pre-alarm or
fi lter blocked
•
check the drain valve/pump;
•
check if the pipes or the manifold are blocked;
•
check if the level sensor is faulty or the pipes are blocked;
•
the fi lter inside the boiler may be clogged.
see procedure
“AR”
manual
active at
according to
Ed
Boiler full
boiler full of water
with no humidifi cation
demand pre-alarm
•
check if the fi ll valve is leaking;
•
check if the high level sensor is dirty.
signal only automatic active
Tab. 9.a
(*) The number of hours after which the CL error occurs cannot be
foreseen and depends on the conductivity of the water, the number of
operating hours etc.. based on an internal calculation.
9.2 Autotest Retry procedure (Fault
tolerance)
AUTOTEST RETRY (“AR”)
Step Description Drain status Fill status
contactor
status
Duration
Condition that can stop “AR”
Vis. Display
1
Interruption
production.
Contactor Opening
Off Off Off 3 sec None.
2 Drain by time On Off Off
If at the end of a set time the fl oat is below
to the minimum reed, the procedure goes to
step 3,
otherwise it drains again and then goes to step 3
High level sensor active EE
3
Wait.
Stabilization.
of level
Off Off Off 3 sec High level sensor active EE
4 Water fi ll-up Off On Off
Ends when the fl oat reaches the control
reed
Contradiction of the levels
EE
High level sensor active
The fi ll time exceeds a maximum limit
5
Wait.
Stabilization.
of level
Off Off Off 10 sec
Contradiction of the levels
EE
High level sensor
6 Drain On Off Off
Ends when the fl oat reaches the
control level
Contradiction of the levels
EE
High level sensor active
The drain time exceeds a maximum limit
7
Wait.
Stabilization.
of level
Off Off Off 1 sec
Contradiction of the levels
EE
High level sensor active
Tab. 9.b
Note :
•
During the Autotest Retry procedure the display shows the code “AR”
alternating with the alarm code that triggered the procedure.
•
If the PRG button is pressed during the Autotest Retry procedure, the
procedure is stopped and normal humidifi er operation resumes.