Battery Contact points coroded & need replacement

Hi Andrew Smith, as you comment, the problem would be in the remote control
You can do a test to see if the remote control is broadcasting
You put the camera of your cell phone focusing on the emitter of the remote control, press any key on the remote and through the camera you will see that the emitting LED turns on (this happens through the cameras of the cell phones detect infrared rays, our view can not do it directly)
With this method you can check if they are emitting each key of the remote control
If you don't emit, you can try cleaning the internal contacts
Try to carefully disassemble the remote control
Separate the plate and the rubber template from the keys, clean the latter with some neutral soap, removing the grease that forms in the contact area, on the other hand, clean the plate with a cloth dampened with a glass cleaner, NO USE ALCOHOL in any case, let all parts dry and reassemble
Take the test and comment
Greetings Franco Dosil

Hola Andrew Smith, por lo que comentas, el problema estaria en el control remoto
Puedes hacer una prueba para ver si el control remoto esta emitiendo
Colocas la camara de tu celular enfocando al emisor del control remoto, presionas cualquier tecla del remoto y a traves de la camara veras que el LED emisor se enciende (esto sucedepor las camaras de los celulares detectan los rayos infrarojos, nuestra vista directamente no puede hacerlo)
Con este metodo podras comprobar si estan emitiendo cada tecla del control remoto
Siencuentras que no emiten, puedes probar limpiar los contactos internos
Trata de desarmar con mucho cuidado el control remoto
Separa la placa y la plantilla de goma de las teclas, limpia esta ultima con algun jabon neutro, sacandole la grasitud que se forma en la zona de contactos, por otro lado, limpia la placa con un pa?o humedecido con algun limpiador para vidrios, NO USES ALCOHOL en ningun caso, deja secar bien todas las partes y vuelve a armarlo
Haz la prueba y comenta
Saludos Franco Dosil

https://europe.yamaha.com/en/products/audio_visual/av_receivers_amps/rx-v367/downloads.html

Have type R11HG/E remote for split system aircon , batteries went flat in remote , replaced tried to reset but will not temp stuck on 24c , clock o:oo no responce from remote to unit.

You're right! It's receiving sensor problem with your PCB. Only repairman who knows electronic tech could only repair. I could say the cost of repair in Indian Rupees IRS.850/- maximum. Hope it's helpful?

I agree with ceocass, however if you find that the contacts are clean and you have made certain that the charging cradle is plugged in you may simply need to replace the battery.
Please note that the replacement batteries for the MX3000 Universal Remote Control, p/n's Powercard PC046067-H & PC036067V3 have been discontinued.
TheBatteryStore.com now carries an alternative battery, p/n PL056067V3 which is a 2,100 mAh typical capacity battery that can be used as a replacement.
Please confirm that the connector type is the same as your battery prior to placing your order. We only carry this battery with the Version 3 connector which has a built in pressure release tab.
The link for the product page is: http://www.thebatterystore.com/replacementbatteryforuniversalremotemx-300037v2100mahli-ionpolymerrechargeable.aspx
If you have any questions please contact TheBatteryStore.com at [email protected].

Please note that the replacement batteries for the MX3000 Universal Remote Control, p/n's Powercard PC046067-H & PC036067V3 have been discontinued.
TheBatteryStore.com now carries an alternative battery, p/n PL056067V3 which is a 2,100 mAh typical capacity battery that can be used as a replacement.
Please confirm that the connector type is the same as your battery prior to placing your order. We only carry this battery with the Version 3 connector which has a built in pressure release tab.
The link for the product page is: http://www.thebatterystore.com/replacementbatteryforuniversalremotemx-300037v2100mahli-ionpolymerrechargeable.aspx
If you have any questions please contact TheBatteryStore.com at [email protected].

I can get you a new battery if you like. Please contact me at www.totalcontrolremotes.com and I will be glad to order you one.

Regards,
Vincent

You need a new battery. I can order one for you if you like.. Please go to my website (www.totalcontrolremotes.com ) and contact me.

Regards,
Vincent
Total Control Remotes

replace your receiver board it may be defective.

Try replacing the battery but if it wont work you need to replace the remote control itself, but for the main time you can operate the unit by pressing the emergency switch button to operate the unit manually.