POSSIBLE PROBLEMS




    First, we need to identify what kind of model you have.  All our meters have the model number D-10, FD-50, F-90, or F-90H on them except for our oldest meters - the ZZW's.  The ZZW's have a serial number rather than a model number.  The F-90 and F-90H are gray colored, the D-10 and FD-50 are either cream, black, or blue colored, and the ZZW's are a brown color.
    If you have a D-10 or FD-50, there are no tests that you can do for it.  You'll have to send your meter into our service center for testing and repair.  Click HERE for shipping instructions.
 
 



 
 

POSSIBLE PROBLEMS WITH YOUR F-90 OR ZZW WITH HEAT ONLY



 
 

POSSIBLE PROBLEMS WITH YOUR F-90H OR ZZW WITH HEAT AND HOT WATER



 
 
 
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