Mazda 6 Training Manual page 347

Mild start correction
• To prevent a large volume of warm air from blowing through the ventilation outlets when the blower motor is
started in summer, the voltage applied to the blower motor is restricted for 3 seconds after it starts. However,
mild start correction does not operate when the passenger compartment temperature is below 20° ° ° ° C {68° ° ° ° F}, or
when airflow is in any mode other than VENT.
.
1 Rises to auto voltage
2 Blower motor applied voltage
MAX HOT and MAX COLD correction
• When the temperature is set to 29.0 (European (L.H.D. U.K.) specs.) or 32.0 (GCC specs.), the applied voltage
of the blower motor is set at AUTO-HI, when at 15.0 (European (L.H.D. U.K.) specs.) or 18.0 (GCC specs.), the
applied voltage of the blower motor is set at MAX-HI. However, when in water temperature correction, MAX
HOT correction does not take place.
Correction
MAX HOT
MAX COLD
Windshield mist prevention correction
• To prevent the air blown from the defroster when the heater is started in winter from clouding the windows, the
blower motor and the A/C signal output are switched off for 6 seconds after the ignition is turned to the ON
position. This control only operates if the airflow is in HEAT, HEAT/DEF, or DEFROSTER mode.
Start compensation correction
• When the blower motor is started at 3.2 V, it is run at a voltage of 4.4 V for 2 seconds to help it stabilize at the
target voltage.
Defroster correction
• To improve defrosting and heating, 2.0 V is added to the AUTO voltage calculated airflow volume automatic
control when the defroster switch is turned on.
Fail-safe function
• If the blower motor is started with more than 4.4 V, a surge will occur and the motor may burn. To prevent this,
the voltage applied to the blower motor is regulated to 4.4 V for 1 second when it is started.
U–28
CONTROL SYSTEM
3
Set temperature
29.0 (European (L.H.D. U.K.) specs.)
32.0 (GCC specs.)
15.0 (European (L.H.D. U.K.) specs.)
18.0 (GCC specs.)
Time
Blower motor applied voltage
12.1 (V): AUTO-HI
B+: MAX-HI
A6E8540T005