Shutdowns And Lock-Outs; Lock Out; Blocking - REMEHA CALORA TOWER GAS 15S EX Installation And Service Manual

CALORA TOWER GAS 15S EX CALORA TOWER GAS 25S EX
CALORA TOWER GAS 35S EX
Code Cause of Description
the fault
E:39 PCU The BL inlet is open
E:40 PCU HRU/URC unit test error
9.2

Shutdowns and lock-outs

22/04/2016 - 300026141-001-07
T001632-B
Checking / solution
Bad connection
Check the wiring
4
External cause
Check the device connected to the BL contact
4
Parameter incorrectly set
Check the parameter IN.BL
4
Bad connection
Check the wiring
4
External cause
Suppress the external cause
4
Parameter incorrectly set
Check the parameters
4
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.
9. Troubleshooting
87