MCi Reliability Driven Series Operator's Manual page 60

START-UP AND SETTINGS
The HVAC system self tests and starts
automatically after the engine speed reaches idle. If the
coach ignition key is ON, but the engine does not start
by the end of the self test, the display will indicate "No
Data" and the system will wait for the engine to start.
The main HVAC system will start at the same
setting as when it was turned OFF.
When heating, the main fans will not start until the
engine coolant temperature exceeds 120F (49C).
The fans start immediately when cooling.
The fans operate automatically at high, medium or
low, depending on the heating or cooling requirements.
NOTE: Turn fast idle ON if running the air
conditioning while stopped.
PARAMETERS and ALARM CODE RETRIEVAL
Pressing the UP and DOWN arrow buttons for 3 - 5
seconds will allow the user to scroll up or down through
the parameters and alarms.
When scrolling through the parameters, the current
parameter will be displayed for 2 seconds. When the
last parameter is reached, the list will wrap back.
Pressing the ON/OFF key at any time, or if no key is
pressed for 30 seconds the mode will exit and will
revert back to the default display.
Lights indicate alarm codes. Each alarm code is a
2 digit number. The first display is the first digit, and
after a slight pause the second display is the second
digit. When the end of the alarm is reached the display
will show "---". If the AUTO key is held down for 5
seconds while"---" is displayed, all inactive codes are
cleared. Record all codes prior to clearing.
PASSENGER ZONE
Default Settings
The default setting for the passenger zone is 70F
(21C). The fans operate at high until the interior
temperature reaches the set point.
Manual Settings
Temperature Settings
The temperature setting will be visible on the display.
Pressing the AUTO key returns settings to auto control.
Fan Settings
The fans can be set at LOW or HIGH.
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Alarms
The display will toggle between an alarm and the
temperature setting when there is a system
malfunction. The system may shut down if the
malfunction is serious.
NOTE: To turn the heat OFF in an emergency,
use the valves located in the engine compartment
or the valve located under the driver's area. Refer
to Section 6 of the Maintenance Manual.
HVAC PRE-TRIP INSPECTION
After starting system operation, allow the system to
stabilize for ten to fifteen minutes, then check the
following:
1. Listen for abnormal noises in the compressor or
fan motors.
2. Check compressor oil level.
3. Check refrigerant level.
4. Ensure that the self-test has been performed
successfully and that there are no errors or
alarms indicated.
5. View compressor drive belt for excessive belt
flap. (Refer to Section 16 of the Maintenance
Manual.)
Back-lit Function
The back-lit function of the Micromate control panel
is actuated when the headlight or clearance lights are
turned ON (Figure 74.).
Figure 74.
July 2015