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Siemens Building Technologies Electronic Air / Fuel Ratio Control System CC1P7873.1en
HVAC Products 12 Data storage module RZD20 15.10.2002
12.1 Procedure for replacing the RVW26...
If, due to a defect or fault, the RVW26… must be replaced, the settings previously
made can be transferred to the replacement unit by taking the following steps:
1. Remove the data storage module from the «old» unit.
2. Plug the data storage module into the «new» unit.
3. Insert the «new» unit into the housing and switch on mains voltage.
4. Plug in the handheld terminal AZW20.20.
5. Execute command «Get_Par» on programming level 7.
6. Execute command «ClrErro» on programming level 7.
7. Measure again the end switch positions on programming level 2.
8. The «new» unit is now ready to operate.
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