Owon PCT503-TY Quick Start Manual
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Owon PCT503-TY Quick Start Manual

Wifi multi-stage thermostat
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PCT503-TY WiFi Multi-stage Thermostat
Quick Start Guide

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Aurangzeb Mirza
June 22, 2025

It was on but now it is off. Just black screen. Do do I turn it back on

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Summary of Contents for Owon PCT503-TY

  • Page 1 PCT503-TY WiFi Multi-stage Thermostat Quick Start Guide...

  • Page 2: Safety Handling

    Safety Handling WARNING: Failure to follow these safety notices could result in fire, electric shock, other injuries, or damage to the Thermostat and other property. Read all the safety notices below before using the Thermostat. • Avoid high humidity or extreme temperatures. •...
  • Page 3 Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: - This device may not cause harmful interference, and - This device must accept any interference received, including interference that may cause undesired operation.

  • Page 4: Technical Specifications

    Technical specifications Compatibility • 2-stage heater and 2-stage cooling HVAC systems • Supports natural gas, heat pump, electric, hot Compatible systems water, steam or gravity, gas fireplaces (24 Volts), oil heat sources • Supports any combination of systems Heat • Up to 2 stages Cool •...
  • Page 5 HVAC Control Functions • Heat, Cool, Auto, Off, Emergency Heat (Heat System Mode Pump only) Fan Mode • On, Auto, Circulation • Local and remote setting of the temperature • Auto-changeover between heat and cool mode (System Auto) Advanced • Compressor short cycle protection delay of 2 minutes •...

  • Page 6: Physical Specifications

    Physical Specifications • MCU: 32-bit Cortex M4; RAM: 192K; SPI Embedded Platform Flash: 16M LCD Screen • 3.5” TFT Color LCD, 480*320 pixels • 3-color LED (Red, Blue, Green) Buttons • One rotary control wheel, 3 side-buttons PIR Sensor • Sensing Distance 5m, Angle 30° Speaker •...

  • Page 7: Overview Of This Guide

    Overview of this guide Part 1 Welcome Page8 A brief introduction to the smart thermostat Part 2 In the box Page8 Products in the box Part 3 Installation Guide Page8-10 Check your old thermostat, and choose the guide you needed Page11-13 Guide 1.
  • Page 8 With a smart thermostat, you will be able to remotely control the temperature anytime through your mobile phone. This guide will provide you with an overview of the product and will help you understand how to use it. In the box PCT503-TY smart thermostat Wiring Module SWB511 (Optional)
  • Page 9 Installation Guide Step 1. Switch off your HVAC system Before you start, please switch off your HVAC system. Adjust the temperature in your old thermostat to double check the system is off. Step 2. Remove the old thermostat Remove the old thermostat cover from the wall, keep the wallplate with wires. Do not remove the wallplate Old thermostat...
  • Page 10 Step 4. Take a photo Take a picture of the wires connected to the terminal of your old thermostat. You may need to reference this photo later on. Step 5. Label the Wires with Tags Carefully disconnect and label the wires from your old themostat one wire at a time, using the label (label 1 )provided.
  • Page 11 Note:Do you have a C wire connected to your old thermostat? YES → Guide 1. NO → Guide 2. Guide 1: Install the thermostat with a C-wire Step 1. Remove the old thermostat base Unscrew the old thermostat base from the wall, gently pull it out and ensure the wires will not fall back into the hole.
  • Page 12 Step 3. Connect Wires Connect wires to the corresponding terminal in the base. Take a picture of the wires when you finished. You may need to refer it for the wirings in the setup wizard later on. Do you have more than one R wire(R, RC, and RH)? YES ：...
  • Page 13 Step 5. Attach the PCT503 to the base Gently press the PCT503 into the base until it clicks. Step 6. Power on your system Congratulation, the installation is finished. Please power on your HVAC system. Step 7. Setup the thermostat Follow the instructions on your smart thermostat to complete the setup.
  • Page 14 Guide 2: Install the thermostat without a C-wire (Optional) CHECKPOINT: 3 OR 4 WIRES The wiring module requires your system to have the following wires: 4 wires: W/W1, Y/Y1, G, and R (or Rc or Rh) or 3 wires: Y/Y1, G, and R (or Rc or Rh) If you don't have those wires, your system might not be compatible.
  • Page 15 Step 1. Find the HVAC terminals Find the control board of your HVAC system.Take a picture of the wires connected to the terminals of your old thermostat. You may need to reference this photo later on . Step 2. Label the wires Use the tags provided (label 2) to label the wires from the control board to the thermostat.
  • Page 16 Step 3. Disconnect the wires Disconnect the R/RC, W, Y, G wires from the control board. Step 4. Connect the wiring module Reconnect them correspondingly to the 4 terminals side of the wiring module. R/RC/RH → RC W/W1 → W G →...

  • Page 17: Step 5. Connect The Wires

    Step 5. Connect the wires Generally the control board will have R, G, Y, W, C terminal, connect the pre-wired side of the wiring module (5 terminals) to the corresponding terminals. Pre-wired, to control panel Step 6. Close the HVAC cover panel Close the HVAC cover panel securely and reture to your thermostat.
  • Page 18 Step 8. Attach the base of PCT503 to the wall Bundle and insert the wires through the hole of the thermostat base, then attach the base to the wall with the screws. Step 9. Attach the tags Attach the tags provided(label 2 Thermostat) to the wires as shown below: R/RC/RH →...
  • Page 19 Step 10. Connect the wires to the corresponding terminal First, connect 3 wires as shown below ： Then connect other wires to the corresponding terminal in the base. Take a picture of the wires when you finished. You may need to refer it for the wirings in the setup wizard later on.
  • Page 20 Step 12. Attach the PCT503 to the base Gently press the PCT503 into the base until it clicks. Step 13. Power on your system Congratulation, the installation is finished. Please power on your HVAC system. Step 14. Setup the thermostat Follow the instructions on your smart thermostat to complete the setup.

  • Page 21: Wiring Diagrams

    Wiring diagrams Below is the wiring diagrams for common HVAC equipments. Conventional heating and cooling system For dual heat and cooling system, if applicable. Remove the jumper for RC or RH, switch the DIP switch on the back of the thermostat to RC if you have connected both RC-wire and RH-wire to the wallplate, otherwise switch it to the RC&RH side.
  • Page 22 Heat pump (air or geothermal) with auxiliary heat For dual heat and cooling system, if applicable. Remove the jumper for RC or RH, switch the DIP switch on the back of the thermostat to RC if you have connected both RC-wire and RH-wire to the wallplate, otherwise switch it to the RC&RH side.

  • Page 23: Boiler Or Radiant System With Air Handler And Conventional Cooling Or Heat Pump

    Boiler or radiant system with air handler and conventional cooling or heat pump For dual heat and cooling system, if applicable. For heat pump only. Remove the jumper for RC or RH, switch the DIP switch on the back of the thermostat to RC if you have connected both RC-wire and RH-wire to the wallplate, otherwise switch it to the RC&RH side.
  • Page 24 Congratulations, you have completed the wiring! To complete your setup, follow the instructions on the configuration guide below. In here you’ll find: — Meet your thermostat — App and device user guide — Troubleshooting — Technical specifications...

  • Page 25: Get To Know Your Device

    Welcome The next guide will provide you with an overview of the SmartLife app and will help you understand how to use the smart thermostat.You will be able to remotely control the temperature anytime through your mobile phone. Get to know your device LED indicator A button Knob...
  • Page 26 LED status The LED status gives the following information of the thermostat: LED status What it means Rapidly flashing(2 times/second):Smart configuration mode Red LED flashing Slowly flashing(once every 3 second):AP mode Device has connected with router Red LED solid on successfully No light Device can not connect with router...

  • Page 27: Get Started

    Get started To get started, you will need: • Connect your smart mobile phone to your home Wi-Fi network. • A smart phone Then follow the steps below: 1.Power on your devices 2.Ensure the LED indicator is flashing red rapidly, if not, please reset the device by the following methods.

  • Page 28: App Installation

    5.1 APP installation IOS devices: Download “SmartLife” in Appstore Android devices: Download “SmartLife”app in Google play...

  • Page 29: Add Devices

    5.2 Add devices 1.Open SmartLife APP 2.Login with existing account,if you are new user you will have to create an account 3.If there is no device in your list, please tap “Add device” button to add 4.If there is a device or devices in the list, please click the “+” button at the top right corner to add devices...
  • Page 30 5.Add the thermostat in “Small home appliance”list manually 6.Enter your home Wi-Fi account and password(Only support 2.4Ghz Wi-Fi), then tap “Confirm” button SSID PASSWORD...
  • Page 31 7.Place the router, mobile phone and thermostat as close as possible 8.Waiting for connection to complete 9.After the device has been added, you can rename the device and tap“Finish” to enter the adjustment interface.
  • Page 32 Overview Home/Away Target temperature Home Current Working Mode Hold until 18 :00 Current temperature Display Blue: Cooling Red: Heating Starts in 2: 00 Current humidity Green: Fan is on. Time interval System mode A two-minute countdown Cooling/Heating/ is set to protect the Emergency heating/Auto compressor.
  • Page 33 • Away: Target temperature when you are not at home(regardless of the schedule) You can change target temperature on the setting menu. • Temporary Hold: Keep the current target temperature until the next scheduled activity begins ( This selection only exists when you are adjusting the target temperature under FollowingSchedule mode.)
  • Page 34 Device menu ( Press the Knob to enter ). System. Off: Turn the system off Cool: Cooling only Heat: Heating only Auto: Automatic control of heating and cooling based on ambient temperature Emergency Heat: This only works when the device connects Heat pump and W wire Fan.
  • Page 35 -Press the button and modify your start time and target temperature. -You can copy this Schedule to other day, or you can select "done" to complete your configuration. Note: You can rotate the button to change target temperature at the main interface, but it will get into "Temporary Hold".

  • Page 36: App Overview

    5.3 App Overview: Home management Add Device Voice Control Location Information Room Management Device List Main menu: Home: 1.Device list You can check the added device, tap one to enter control page 2. Location information You can check the local weather forecast 3.Home management Add or delete items and manage home names, rooms, locations, and members 4.Voice control (Temporarily not available on Smart Life App.

  • Page 37: Control Board

    Device info System Mode Current temperature Target temperature and humidity Control board: Select the target thermostat in device list then enter the control board. • Device info You can check and edit device info here, check and upgrade the firmware •...

  • Page 38: Schedule Settings

    • Mode: Work mode FollowSch: Follow the settings of schedule to adjust the temperature PerHold: Hold current target temperature regardless of the schedule.This will over ride the current schedule settings Away: Settings for when you are not at home TempHold: Keep the current target temperature unchanged until the next scheduled activity begins ( This selection only exists when you are adjusting the target temperature under FollowSch mode.) •...

  • Page 39: Multiple Operation

    Multiple operation: After setting the temperature range, tap “Save” button to save the schedules. Delete Schedule: All schedules will be deleted after the button is pressed.
  • Page 40 1.Only need to pair one device If there are many devices in the current environment, while you only want to pair one device, press button A for 5 seconds when the LED light is quick flashing, then wait for the LED to turn to slow flashing, then select “Other Mode”...
  • Page 41 Select AP Mode, then pair the device Connect to the Wi-Fi hotspot of the device: ”SmartLife-XXX” It will take a few time to connect to the Smartlife wifi.After the connection is completed, go back to the app and continue pairing according to the above method.
  • Page 42 2.How to share my device for family use? Option1: If you need to share with others, add them to your home list (Tap Me > Home Management > Add members) Option2: You can enter the single device control page in the app >...
  • Page 43 4.What if the device is offline? 1.Please confirm whether the device is powered on. 2.Please confirm whether the device or the network has been cut off, If so, please reconnect the network, it may need some time to recover. Please check the status 2 minutes later.
  • Page 44 2.Ask about the current temperature on the Auto, Off system mode Voice control command: "Alexa, what is the temperature of my thermostat?" Voice unsupport: 1. System mode switching. 2. Fan mode switching. Follow the steps below to enable your alexa 1.Open your Alexa App 2.Tap the icon on the top-left corner of the App to get into "Skills&Games"...

  • Page 45: Compatible Systems

    Support If you have questions, we have answers. Technical support is available by email : info@owon.com Compatible systems The PCT503 Thernostat works with most centralized residential heating and cooling systems. • 2-stage heater and 2-stage cooling HVAC systems • Supports natural gas, heat pump, electric, hot water, steam or gravity, gas fireplaces (24 Volts), oil heat sources •...

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