User Manual

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Building Technologies M-bus System CE1P5361en
HVAC Products 8 Addendum 08.02.2007
Error code central unit Error code device
02 Undervoltage
EA21 Main battery too weak
EA22 Backup battery too weak
07 Error operating conditions
EA20 Parameter outside tolerances
EA30 Tolerance error of some other sys-
tem device
EA31 Primary address conflict (address
assigned twice)
EA34 Clock tolerance between 2 network
nodes too high
10 Communication error subsystem Eb4x Communication to x radio nodes
temporarily interrupted
EC4x Communication to x meters tempo-
rarily interrupted
34 Communication breakdown M-bus --- Current error of device not avail-
able
43 Severe error, hardware error
42*, 49*
EA10 Undefined device error
EA11 Hardware error
50 Severe error, communication
breakdown subsystem
42*
Eb4x Communication to x radio node
continuously interrupted
EC4x Communication to x measuring
instruments interrupted
* With OZW10 V4.0, these error codes are produced by mistake
Error code central unit Error code device
02 Undervoltage F:2 Undervoltage battery
07 Error operating conditions
02*, 05*, 06*
F:64 Open-circuit flow temperature
measuring circuit
F:74 Short-circuit flow temperature
measuring circuit
F:84 Open-circuit return temperature
measuring circuit
F:94 Short-circuit return temperature
measuring circuit
10 Communication error subsystem
01*
--- Temporary communication break-
down between radio node on the
M-bus and meter
34 Communication breakdown M-bus --- Current error of device not avail-
able
43 Severe error, hardware error
42*, 49*
F:4 Severe functional error was pend-
ing
F:43 General hardware error: Device
defective
50 Severe error, communication
breakdown subsystem
41*, 42*, 45*
--- Continuous communication break-
down between radio node on M-
bus and meter
* With OZW10 V4.0, these error codes are produced by mistake
Error code central unit Error code device
02 Undervoltage Error Undervoltage battery
10 Communication error subsystem
01*
--- Temporary communication break-
down between radio node on the
M-bus and meter
34 Communication breakdown M-bus --- Current error of device not avail-
able
43 Severe error, hardware error
42*
49*
Error Hardware error or sabotage contact
Radio nodes WTX16
and WTT16
MEGATRON
®
2
WFM / WMM / WFQ /
WFN / WFR / WMN (radio
868 MHz),
VOLUTRON
®
2
WFH / WMH / WFC/ WMC
(radio 868 MHz)
MEMOTRON
®
2 WHE26