JPS6446532A - Circuit to protect air conditioner from mistaken connection - Google Patents
Circuit to protect air conditioner from mistaken connectionInfo
- Publication number
- JPS6446532A JPS6446532A JP62199493A JP19949387A JPS6446532A JP S6446532 A JPS6446532 A JP S6446532A JP 62199493 A JP62199493 A JP 62199493A JP 19949387 A JP19949387 A JP 19949387A JP S6446532 A JPS6446532 A JP S6446532A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- fuse
- indoor unit
- contact point
- current detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
PURPOSE:To make it possible to prevent the breakage of an element even if it is connected by mistake by supplying electric power through a fuse and resistor separately from a control circuit on the side of the indoor unit to a serial circuit consisting of a relay contact point for operation on the side of the indoor unit and electric current detection circuit and a serial circuit consisting of a relay contact point for driving a four-way valve and electric current detection circuit. CONSTITUTION:A serial circuit which includes a relay contact point 7 to operate an air conditioner on the side of the indoor unit 3 and a current detection circuit 17 and a serial circuit which includes the contact point 16 of a relay to drive a four-way valve for switching room cooling and room heating and an electric current detection circuit 17 are connected to the R phase through a fuse 14 and resistor 15. On the other hand, a control circuit 5 on the side of the indoor unit is supplied electric power from the R phase through another fuse 14'. Accordingly if the connection of either a connection line 12 or 13 of the indoor unit 3 and outdoor machine 4 is mistaken, the electric current is restricted by a resistor 15 before either the relay contact point 7 or 16 is welded or the element breakage in the electric current detection circuit 8 or 17 occurs, and, furthermore, the fuse 14 blows. It is, therefore, possible to avoid serious trouble due to a mistaken connection and it can be repaired only by replacing the fuse.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62199493A JPS6446532A (en) | 1987-08-10 | 1987-08-10 | Circuit to protect air conditioner from mistaken connection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62199493A JPS6446532A (en) | 1987-08-10 | 1987-08-10 | Circuit to protect air conditioner from mistaken connection |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6446532A true JPS6446532A (en) | 1989-02-21 |
Family
ID=16408730
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62199493A Pending JPS6446532A (en) | 1987-08-10 | 1987-08-10 | Circuit to protect air conditioner from mistaken connection |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6446532A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112798983A (en) * | 2020-12-30 | 2021-05-14 | 珠海格力电器股份有限公司 | Method and device for detecting connecting line of internal and external machines |
-
1987
- 1987-08-10 JP JP62199493A patent/JPS6446532A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112798983A (en) * | 2020-12-30 | 2021-05-14 | 珠海格力电器股份有限公司 | Method and device for detecting connecting line of internal and external machines |
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