MHK2 Product Manual

19
Screen is blank
• Verify fresh AA batteries are installed in the correct orientation.
Heating or
cooling system
does not
respond
• Touch Mode to set system to Heat. Make sure the temperature is set higher
than the inside temperature.
• Touch Mode to set system to Cool. Make sure the temperature is set lower
than the inside temperature.
• Check circuit breaker and reset if necessary.
Temperature
settings do not
change
Your installer may have set a range stop setting for heat or cooling. Contact your
installer to verify the range stop settings on the controller. Default range stops
settings are:
• Heat: 40 °F to 90 °F (4.5 °C to 32.5 °C)
• Cool: 50 °F to 99 °F (10.0 °C to 37.0 °C)
Controller
shows a "WAIT"
screen
The MHK2 Controller will display a "WAIT" screen while it receives data from
the air conditioner.
• On the "WAIT" screen if the controller shows the RedLINK™ disconnected
icon
at the top-right, the controller has lost connection with the receiver.
• On the "WAIT" screen if the controller shows the RedLINK™ connected icon
, the controller is waiting for the air conditioning to connect.
• To unenroll the receiver, press and hold the bottom-center of the controller's
screen for 5 seconds. The controller will then be unenrolled regardless if the
receiver is on or off.
Troubleshooting
General System Information
CAUTION: ELECTRICAL HAZARD
Can cause electrical shock or equipment damage. Disconnect power before beginning
installation.
CAUTION: ELECTRONIC WASTE NOTICE
The product should not be disposed of with other household waste. Check for the nearest
authorized collection centers or authorized recyclers. The correct disposal of end-of-life
equipment will help prevent potential negative consequences for the environment and human
health.
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