Heating Fan Control - Carrier 30AWH004HB Service Manual

2) Heating fan control

004-006 sizes
The blowing air volume at the outdoor unit side is controlled as follow:
1. When strong wind blows at outdoor side, the operation of heat pump continues with the fan motor stopped.
2. Whether the fan is locked or not detected, and the operation of heat pump stops and an alarm is displayed if the fan is
locked.
3. According to each operation mode, by the conditions of outdoor temperature (TO) and compressor revolution, the
speed of outdoor fan shown in the table is selected.
008 size
1. The outdoor fan is controlled by TE sensor, TO sensor and the operation frequency. (From Min. W1 to Max. are controlled
according to the following table.)
2. During 3 minutes after start-up, the fan is fixed with the maximum fan tap corresponding to zone in the following table.
After then the fan is controlled by temperature of TE sensor.
3. If status, TE > 24°C continues for 5 minutes, the operation stops. This status is same to the usual Thermo-OFF which has
no alarm display, and the fan restarts after 2 minutes and 30 seconds. This intermittent operation is not abnormal
012 size
1. This control function lowers the fan tap according to the TE sensor value when the outdoor temperature is high.
2. When a status TE > 20C is detected continuously for 5 minutes, the operation may stop. Thisstatus does not output an error
code and is assumed as usual status of thermo-OFF. The fan restarts after approx. 2 minutes 30 seconds and this intermittent
operation is not an issue.
3. This control function does not work for 30 minutes after activation, 1 minute after defrosting and during defrost operation
Control for fan tap by outdoor temperature in normal operation.
TO
MIN
MAX
015 size
1. The outdoor fan is controlled by TE sensor, TO sensor and the operation frequency. (Control from minimum W1 to maxi-
mum (according to the following table)
2. For 3 minutes after the operation has started, the maximum fan tap corresponding to the zone in the following table is
fixed and then the fan is controlled by temperature of TE sensor.
3. When TE e 24°C continues for 5 minutes, the compressor stops. It is the same status as the normal thermostat- OFF
without error display. The compressor restarts after approx. 2 minutes 30 seconds and this intermittent operation is not
abnormal.
SM_30AW.indd 67
~ 16.8
Compressor speed
(Hz)
MIN
TO ≤ 15 °C W4
TO < 15 °C W4
TO
TO < 5.5 °C W9
TO < -5.0 °C WC
TO ≥ 15 °C W4
During
TO < 15 °C W4
ECO
TO < 5.5 °C W6
mode
TO < 5.5 °C W8
When To is abnormal WB
Temp. range
10 °C ≤ TO
5 °C ≤ TO < 10°C
-5 °C ≤ TO < 5°C
TO ≤ - 5°C
TO error
10≤TO
W1
WE
Temp. range 20 Hz or lower
MAX
10 °C ≤ TO W7
5 °C ≤ TO < 10°C W9
-3 °C ≤ TO < 5°C WB
-10 °C ≤ TO < -3°C WC
TO ≤ - 10°C WD
TO error WD
Control management
~ 47.9 48.5 ~ MAX
MAX MAX
W9 WA
WA WB
WB WE
WD WE
W4 W7
W4 W9
W4 WA
WB WC
WC WE
f <38.9 Hz 38.9 Hz ≤ f <67.6 Hz
W7 W8
WA WB
WE WF
WE WF
WE WF
5≤TO<10 TO<5
W1 W1
WE WE
20 Hz to 45HZ 45 Hz or higher
MAX MAX
W8 W9
WA WB
WB WC
WC WC
WD WD
WD WD
67
5
67.6 Hz ≤ f
W9
WD
WF
WF
WF
30AW
14-03-2011 14:45:15