User Manual

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Building Technologies M-bus System CE1P5361en
HVAC Products 8 Addendum 08.02.2007
8.7.4 Heat meters MEGATRON
®
2 WFM / N / Q / R21… (M-bus)
The MEGATRON
®
2 heat meter shows severe errors on the display’s top level "Actual".
Minor errors are only displayed on the "Info" level.
Error code central unit Error code device
02 Undervoltage F:2 Undervoltage battery
34 Communication breakdown M-bus --- Current error of device not available
40 Severe error
F:4 Severe function error was pending
F:43 General hardware error: Device
defective
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
42 Severe error, undervoltage F:42 Undervoltage battery
8.7.5 Water meters VOLURON
®
2 WFH / C21… (M-bus)
The VOLUTRON
®
2 water meter shows severe errors on the display’s top level "Actual".
Minor errors are only displayed on the "Info" level.
Error code central unit Error code device
02 Undervoltage F:2 Undervoltage battery
34 Communication breakdown M-bus --- Current error of device not available
40 Severe error
F:4 Severe function error was pending
F:43 General hardware error: Device
defective
42 Severe error, undervoltage F:42 Undervoltage battery
8.7.6 Pulse adapter AEW21.2
The AEW21.2 pulse adapter has no (error) display.
Error code central unit Error device
02 Undervoltage --- Undervoltage battery
34 Communication breakdown,
M-bus
--- Current error of device not available
40 Severe error --- Hardware error, sabotage contact or
error detection on pulse interface
(Namur)
42 Severe error, undervoltage --- Hardware error, sabotage contact or
error detection on pulse interface
(Namur) and undervoltage battery
8.7.7 Pulse adapter Relay PadpulsM1
The PadPulsM1 pulse adapter has no (error) display.
Error code central unit Error device
09 Device-specific error --- Write protection set (no error)
34 Communication breakdown
M-bus
--- Current error of device not available