Laars MFTHW199 - 5.5 CH Set Point Change Mode

LAARS Heating Systems
Page 56
5.3OperatingMode
Operating Mode
After the Power is turned on, and/or the Control Display is turned on , the Control Display
will go through a ‘Start Up’ checklist and briey show a sequence of diagnostic codes before
entering into the ‘Operating Mode. It will then display the following information.
The Control Display can operate through user and service modes that have specic LCD output
and dedicated controls:
• Set-point change mode • Lock mode • Error mode • Status display mode
• Outside Temperature mode • Installer mode
* Control Display will not allow changing of button in case of lock mode activated.
Indicate Indicator
Current Operating Temperature Set-Point
If the Fan is operating
If a ame is detected
Celsius or Fahrenheit
or
Date and Time indicator
If Outside Temperature Sensor is operating
If there is a Demand for Central Heat (CH)
If CH pump state is operating
If Internal recirculation pump is operating
If Communication state is activated
B C
E
A D