Innotherm UCCA-36HDC, Руководство по установке

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13
OVER CURRENT OR LOW
CURRENT PROTECTION
A. Check the voltage of input AC power is within
normal range. B. Check DC power voltage on
outdoor unit main PCB, if the voltage is lower than
150VDC, then replace the outdoor unit main PCB;
if the voltage is higher than 400VDC, then change
PFC modular board, or change the inverter modular
board.
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14
INDOOR UNIT FAN COIL
TEMPERATURE SENSOR
FAILURE
A. Connection location on indoor unit PCB is:
CN8/T2_PIPE for 12kbtu/18kbtu, CN19/PIPE/PT
for 24kbtu/36kbtu, replace with new sensor; B. after
step A, if unit still displays error code E3, change
the indoor unit PCB.
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16
INDOOR UNIT AMBIENT
TEMPERATURE SENSOR
FAILURE
A. Connection location on indoor unit PCB is:
CN11/ T1_ROOM for 12kbtu/18kbtu,
CN20/ROOM/RT for 24kbtu/36kbtu, replace with
new sensor; B. after step A, if unit still displays
error code E2, change the indoor unit PCB.
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17
ANTI-FROSTING IN COOLING
MODE
A. Check if indoor unit fan motor is operating;
B. Check if unit is in the cooling mode when ambient
temperature is too low; C. Check if the resistance
data of indoor unit fan coil temperature sensor is
correct according to resistance data table of sensors
in this manual.
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18 ANTI-OVERHEATING IN
HEATING MODE
A. Check if indoor unit fan motor is operating;
B. Check if unit is in the heating mode when
ambient temperature is too hot; C. Check if the
resistance data of indoor unit fan coil temperature
sensor is correct according to resistance data table
of sensors in this manual.
E21 OUTDOOR CONDENSER
OVERHEAT IN COOLING MODE
A. Check if outdoor unit fan motor is operating;
B. Check if unit is in the cooling mode when ambient
temperature is too hot; C. Check if the resistance
data of outdoor unit fan coil temperature sensor is
correct according to resistance data table of sensors
in this manual.