Code
Cause of
the fault
Description
Checking / solution
E
:
39
PCU
The
BL
inlet is open
Bad connection
4
Check the wiring
External cause
4
Check the device connected to the
BL
contact
Parameter incorrectly set
4
Check the parameter
IN.BL
E
:
40
PCU
HRU/URC unit test error
Bad connection
4
Check the wiring
External cause
4
Suppress the external cause
Parameter incorrectly set
4
Check the parameters
9.2
Shutdowns and lock-outs
9.2.1.
Lock out
If the blocking conditions still exist after several start up attempts, the
boiler will switch into locking mode (fault). The boiler can only start
operating again once the causes of the lock-out have been rectified
and after pressing the
>
key.
9.2.2.
Blocking
A (temporary) blocking mode is a boiler operating function caused by
an unusual situation. In this case, the display gives a code of blocking
(code
5t[9
). The boiler control will try to re-start several times.
The boiler will start up again after the blocking conditions have been
eliminated.
To display the current blocking code, proceed as follows:
1. Press the two
f
keys simultaneously.
2. Confirm by pressing key
S
.
5t
is displayed, alternating with
the shutdown code
9
.
3. Press the
[+]
key.
5u
is displayed, alternating with the shutdown
code
XX
.
The boiler starts up again automatically when the reason
for the blocking has been removed.
T001632-B
CALORA TOWER GAS 15S EX CALORA TOWER GAS 25S EX
CALORA TOWER GAS 35S EX
9. Troubleshooting
22/04/2016 - 300026141-001-07
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