Instruction/ maintenance manual of the product L7224 Honeywell
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T ECHNICIAN’ S QUICK REFERENCE GUIDE 69-1957—1 L7224 Series Oil Electronic Aquastat® Controller The following service procedure pr ovides a quick overview for L7224 Series Controllers.
69-1957—1 2 L7224 SERIES Pressing the I button again will display the LL (Low Limit) followed by a three-digit number and the corresponding degree designator . See the table below for an explanation of display readout. After approximately 60 seconds without any key presses, the display will enter a dim display mode.
3 69-1957—1 L7224 SERIES T able 2. L7224 Controller Operating Seq uence T roubleshooting When attempting to diagnose system performance, reference the LED display to help identify specific areas not working properly . The LED display will scroll “err”, follo wed by a digit (1-8).
Automation and Control Solutio ns Honeywell Internatio nal Inc. Honeywell Limited-Hon eywell Limitée 1985 Douglas D rive North 35 Dynamic Drive Golden Valley, MN 55422 Toronto, Ontari o M1V 4Z9 customer.hon eywell.com ® U.S. Registered T rademark © 2006 Honeywell International Inc.
An important point after buying a device Honeywell L7224 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Honeywell L7224 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Honeywell L7224 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Honeywell L7224 you will learn all the available features of the product, as well as information on its operation. The information that you get Honeywell L7224 will certainly help you make a decision on the purchase.
If you already are a holder of Honeywell L7224, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Honeywell L7224.
However, one of the most important roles played by the user manual is to help in solving problems with Honeywell L7224. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Honeywell L7224 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
