Diagnostic method of cross-wire fault

Patent metadata

Field	Value
Publication number	US-2025075926-A1
Application number	US-202418950001-A
Country	US
Kind code	A1
Filing date	Nov 16, 2024
Priority date	Mar 20, 2022
Publication date	Mar 6, 2025
Grant date	—

Abstract

A diagnostic method of a system having at least one device under test and at least one peripheral device, the diagnostic method including obtaining a response of a test action conducted on the at least one device under test; and obtaining a response of a test action conducted on the at least one peripheral device; wherein if both the response of the test action conducted on the at least one device under test deviates from an expected result based on the test action conducted on the at least one device under test and the response of the test action conducted on the at least one peripheral device deviates from an expected result based on the test action conducted on the at least one peripheral device, a cross-wire fault is raised.

First claim

What is claimed herein is:

1 . A diagnostic method of a system having a controller, two or more heating devices each having a heat exchanger, a valve disposed upstream of the heat exchanger, and a temperature sensor disposed downstream of the heat exchanger, said diagnostic method comprising, using the controller to:
(a) identify active heating devices of the two or more heating devices in the system to result in two or more active heating devices; (b) determine at least one test to be performed on said two or more active heating devices, said at least one test involves a unique pairing of said two or more active heating devices, wherein said unique pairing comprises a first heating device comprising a first valve and a first temperature sensor and a second heating device comprising a second valve and a second temperature sensor; (c) send a first command to open the first valve, obtain a response of the first heating device as indicated by the first temperature sensor to said first command and determine the existence of a first temperature rise as indicated by the first temperature sensor, wherein if the first temperature rise does not exist, a first deviation exists; and (d) send a second command to open the second valve, obtain a response of the second heating device as indicated by the second temperature sensor to said second command and determine the existence of a second temperature rise as indicated by the second temperature sensor, wherein if the second temperature rise does not exist, a second deviation exists, wherein if both said first deviation and said second deviation exist, a cross-wire fault is raised and if only one of said first deviation and said second deviation exists, a device under test fault is raised; and (e) repeat steps (c)-(d) until said at least one test has been completed.

2 . The diagnostic method of claim 1 , further comprising sending a first command to open the first valve as part of a normal operation of the first valve.

3 . The diagnostic method of claim 1 , further comprising sending a first command to open the first valve as part of an exerciser.

Assignees

• Intellihot Inc

Inventors

• Deivasigamani Sridhar
• Akasam Sivaprasad

Classifications

• F24D2200/043

  More than one gas or oil fired boiler · CPC title

• F24H15/238

  Flow rate · CPC title

• F24H15/219

  after heating · CPC title

• F24H15/395

  Information to users, e.g. alarms · CPC title

• F24F11/38 Primary

  Failure diagnosis · CPC title