6.3 Operating display of the WCM-EM
WCM-EM display
Display status
Meaning
Mains LED ON
Mains voltage applied
Mains LED OFF
No mains voltage applied
Mains LED flashing
50 % ON, 50 % OFF
Mains voltage applied, fault condition
(e.g. sensor failure)
All LED's flashing
eBUS address A set (see Ch. 7.1.1),
after 10 seconds standard values are loaded (re-
set)
LED's turn on in sequence
Progress of loading process for standard values
when resetting the WCM-EM (see Ch. 6.7)
eBUS LED flashing
50 % ON, 50 % OFF
Start phase of unit
eBUS LED flashes irregularly
5 % ON, 20 % OFF
5 % ON, 70 % OFF
Unit address is set correctly,
Bus connection is made,
Bus supply is correct
eBUS LED continually OFF
BUS open circuit, no BUS connection or BUS is
under-supplied
eBUS LED continually ON
BUS is overloaded
eBUS voltage > 100 mA
eBUS LED flashing
50 % ON, 50 % OFF
Incorrect eBUS address set (see Ch. 7.1.1)
Mixer Open LED ON
WCM-EM heating circuit
Mixer motor in OPEN position
WCM-EM DHW
Control of circulation pump is active
Mixer Closed LED ON
WCM-EM heating circuit
Mixer motor drives closed
WCM-EM-DHW
Control of Antilegionella bypass pump active
Pump LED ON
WCM-EM heating circuit
Heating circuit pump in operation
WCM-EM DHW
DHW load pump in operation
eBUS LED and Mains LED flashing
eBUS address F set (see Ch. 7.1.1),
manual operation active
Error LED flashes
Display of error via error code on WCM-FS
Installation and operating instruction
Remote control station WCM-FS 2.0 and extension module WCM-EM 2.1
6 Operation
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Summary of Contents for WCM-EM 2.1
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