Your Cala has a screen on the front with four buttons below it. You can use it to start Boost, check on your heater and change its settings, even without the Cala app.
The four buttons
From left to right, the buttons are:
- Back (left outer button): goes back one screen.
- Up (left inner button): moves the highlight up.
- Down (right inner button): moves the highlight down.
- Select (right outer button): chooses the highlighted option.
Small icons on the screen, just above each button, show what that button does. Not every screen shows every icon.
To use a menu, press Up or Down until the option you want is highlighted, then press Select. At the end of a list, the highlight wraps around to the other end.
The Home screen
When the screen wakes, you see the Home screen. It shows:
- The time, at the top.
- How your Cala is connected: Wi-Fi, Sidewalk (connected through Amazon Sidewalk instead of your Wi-Fi) or Not Connected. If it says Not Connected, see Change Wi-Fi or reconnect an offline heater.
- Hot water: a number of GAL with HOT WATER READY underneath. This is about how many gallons of hot water are ready to use. See How much hot water do I have?
- Buttons: BOOST HEAT and SETTINGS. If your Cala isn't connected to the Cala app yet, you also see APP CONNECT.
Messages on the Home screen
Sometimes a short message appears on the Home screen. The common ones are:
- Compressor Start Delay or Compressor Stop Delay with a number of seconds. This is normal. Cala waits a short time between starting and stopping the heat pump to protect it.
- Clean air filter. Go to Settings->Alert Management to clear. It's time to clean the air filter. See Clean the air filter.
- A banner that starts with DEMAND RESPONSE. Your utility has asked Cala to change when it heats. See Demand response: grid events on your Cala.
- A short code with a message, or Multiple errors occurred. Cala has found something that needs a look. See Leak and heat pump alarms, or contact Cala support and read them the message.
Open the Settings menu
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On your Cala's screen, press any button to wake it. The Home screen appears.
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Press Down until SETTINGS is highlighted, then press Select. The SETTINGS screen opens with DEVICE STATUS highlighted.
The SETTINGS screen opens with DEVICE STATUS highlighted. -
Press Back when you're done to return to the Home screen.
What's in the Settings menu
- DEVICE STATUS: your heater's ID, Wi-Fi network, temperatures and more. See Check your heater's status.
- APP SETTINGS: change the Wi-Fi network or reconnect to the Cala app. See Change Wi-Fi or reconnect an offline heater.
- TEMP CONTROL: get more hot water, or change how hot the water at your taps is. See Not enough hot water? and Too hot or too cold?
- ALERT MANAGEMENT: turn the heater's alarms on or off, and clear the air filter reminder. See Leak and heat pump alarms and Clean the air filter.
- ADVANCED: display units, fan speed, demand response, Home Assistant, a network test, restart and factory reset. See Change display units and fan speed and Restart or factory reset your water heater.