AI-008 operation manual
Issue 1 13.10.28, HMI version 08, plc version 08
P.36 of 40
> Trouble Shooting (cont.)
Problem
cause
solution
No power in some places
Power cable or plug faulty
Check the power supply connection
Circuit breaker tripped
Reset circuit breaker and investigate the cause
Main power switch not turned on
Press the power ON button (start)
Bad connection
Check all wires for loose connection
Faulty transformer
Check the voltage of switching power supply
Motor not turning
Faulty Main controller
Replace a new controller
Motor short circuit
Check circuit or replace a new motor
Temperature display not
stable
Faulty thermocouple
Replace a new temperature sensor
Loose thermocouple connection
Check and secure the connection
Faulty temperature controller
Replace PCB in the main electrical box
Thermocouple extension wire short circuit
Find the location and fix
Thermocouple not installed in proper
position
Check the position of sensor tip and fix
Temperature display
Thermocouple extension wire short circuit
read ambient at all time
Heater is not turned on
Press HEAT to enable heater
Air pressure too low
Inspect if air supply is cut off
Temperature fluctuate
abnormally
Broken heater element
Replace heater element
Faulty thermocouple
Replace thermocouple
Hose tangled
Check for hose clearance or pinch during
heater movement
Line voltage fluctuation
Install voltage regulator
Loose object in air passage
Remove nozzle and clean the foreign material
Heater Not heating
Faulty solid state relay (SSR)
Replace solid state relay
Pressure low interlocked
Increase nozzle air pressure
Heater broken
Replace heater element
