HOUNO CPE - Page 67

ERROR CODES
SERVICE MANUAL 67
Error Code 44
Exhaust error. At every start up the CPU makes the valve run a reference round.
Steps Check list Solution
1 Use the technicians test menu, oven test.
Test if the exhaust valve works and the
switch send a signal back to the CPU.
2 If the motor is rotating the valve but there
is no on/o signal from the switch. Bridge
the two wires on the exhaust motor switch.
If exhaust signal changes in
the test menu. replace the
complete exhaust walve.
3 If the motor is not running, check that
there is a 24V power supply for motor.
24V is present, replace the
motor.
4 If there is no 24V power supply for the
motor. Meassure the wires from the I/O
bord to the connector for the valve motor.
Repair the damaged wire.
5 Measure the 24V pover supply directly on
the I/O.
If the 24V is missing replace
the I/O board.
Error Code 45
There is no 24VAC. Main contactor output is not working.
Steps Check list Solution
1 Check fuse F1. Replace fuse F1.
2 Measure the 24V on I/O board conector J1
wire pin no 1-3-5)
if not repair the wires.
2 Check the led F1 24V on the I/O board