P1-Water Full Alarm - Toyotomi KURO Mini Service Manual

P1-Water full alarm

Error
phenomenon
Explanation of
error
Tools required
for inspection
Frequent
problematic part
Inspection
procedure and
key points
Special attention
Error code
LED light signal of
external panel
Cause:
1. The unit storage tank is full of water;
2. The float switch is abnormally disconnected;
3. The main control board is abnormal.
Inspection path:
1. Check the water level of the storage tank of the mobile air
conditioner;
2. Check whether the working state of the float switch is normal;
3. Replace the main control board.
Multimeter
Main control board 、Float switch
1. Check the water storage tank of the mobile air conditioner, open the
water tank plug behind the air conditioner, release the water in the
water tank completely, turn off the power after the air conditioner is
turned off, then power on, start the operation, and observe whether the
unit is normal.
2. If the water level is normal, observe whether the float switch of the
unit is in an abnormal state. If the float cannot return to the normal
state and suspend in the air，At the same time, use a multimeter to
check whether the float switch is in the Conduction
normal conditions,If disconnected, replace the float switch.
3. If the 1/2 step is checked, it is normal, then replace the main control
board.
Usually ，the alarm is stopped when the water tank is full. After the
water is drained, the alarm is automatically restored.
P1
LED1
LED2
LED3
Light
Light
Off
state under