Why thermostat displaying 777 all time ?w1209

Community General Discussion
1

Why thermostat displaying 777 all time ??w1209

2

How is this Arduino related? I would suggest that you consult the user manual.

Your topic has been moved to a more suitable location on the forum. Installation and Troubleshooting is not for problems with (nor for advice on) your project :wink: See About the Installation & Troubleshooting category.

3

What is w1209?
What is the model Arduino you are using?
Can you please post your code?
Can you please post a schematic of your project?

Thanks.. Tom... :smiley: :+1: :coffee: :australia:

4

Hi,

I don't see a "welcome to the community" so I'll assume you posted here before.

You question does not have any near enough detail for us to even know what you are talking about. So you might want to step back and put together a more detailed statement of your issue.

5

Picture please

6

Wild guess that it's something like

7

Hi,

DESCRIPTION
W1209 Digital Temperature Control Switch is a programmable thermostat for 12V Applications. Module can be used for both heating and cooling. Parameter 0 can be set to either Hot or Cold Control setting. The relay module is based on a microcontroller and has 7 user configurable parameters accessible using 3 push buttons.

  • Temperature range :-50~110°C
  • Dimensions : 48.5x40mm
  • Temperature control mode: ON / OFF
  • Resolution : When temperature is 0.1°C, the resolution is -9.9~99.9, other temperature segment is 1°C
  • Control accuracy : 0.1°C
  • Hysteresis accuracy : 0.1°C
  • Refresh rate : 0.5S
  • High temperature protection: 0~110°C
  • Supply voltage : DC 12V
  • Static current : ≤35MA, attract current ≤65MA
  • Output voltage : DC 12V
  • Output power : 20A relay
  • Measurement input : NTC (10K 0.5%) Waterproof Sensor
  • Environmental requirements : -10 ~ 60°C, Humidity 20% -85%

Instructions for use:
Connect the power supply and equipment , the measuring temperature is displayed, press the "SET" button, press " + or - " to set the desired temperature (long press " + or - " to quickly increase or decrease), press "SET" to confirm the setting and return, controller Automatically performs the relay ON/OFF.
The thermostat output is 10A relay, meet a variety of high-power loads,
LED Indicator : LED off indicates the relay off; Lighting,indicates the relay is closed.
Digital LED Tubes : "LL" indicates sensor open, "HH" indicates overrange, the relay will be forcibly disconnected; "---" indicates high temperature alarm
Long press the "SET" button to enter the main menu settings, press " + or - " to switching between P0-P6,then long press "SET" or 10 seconds without keystrokes to confirm the setting and return.
Buttons:

  • P0 : Cooling / Heating; Range: C/H; Default: C
  • P1 : Hysteresis Setting; Range:0.1-15; Default: 2
  • P2 : Highest Setting Limit; Range:110; Default: 110
  • P3 : Lowest setting Limit; Range:-50; Default: -50
  • P4 : Temperature Correction; Range:-7-7°C, Default: 0°C
  • P5 : Delay Start Time; Range:0-10 Minute; Default: 0
  • P6 : Key Tone Switch; Range:0-110; Default: Off
  • When the Thermostat is power off, long press " - or + ", you can restore the factory settings

Can you please post an image(s) of your controller displaying the 777?
What are you using to power the controller?

Thanks.. Tom... :smiley: :+1: :coffee: :australia:

8

Power is 12V DC

9

Hi,

From what?

What does the display show when you remove the NTC temperature sensor?

Thanks.. Tom.. :smiley: :+1: :coffee: :australia:

10

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