List of solutions to common problems of test equipment.

no
plus
wet

Whether the connection is good

Reconnect

Whether the meter display is normal / whether there is output

Repair / Replace

Whether the meter setting is correct

Reset

Whether the humidification switch is on / whether the contact is good / whether it is burnt or damaged

On / Repair / Replace

Does the actuator (contactor, relay, thyristor, solid state relay) have output

replace

Whether the heating element of the actuator is burnt or damaged

replace

Whether the water supply system is normal / whether there is a water cut indication

Adjustment / Repair

no
plus
heat

Whether the connection is good

Reconnect

Whether the meter display is normal / whether there is output

Repair / Replace

Whether the meter setting is correct

Reset

Whether the blower switch is on / whether it is burnt or damaged / whether the contactor is connected or burnt

Reopen / replace

Whether the heating switch is on / whether the contact is good / whether it is burnt or damaged

On / Repair / Replace

Does the actuator (contactor, relay, thyristor, solid state relay) have output

replace

Whether the actuator (heating tube, heating wire) is burnt or damaged

replace

Whether the controller, regulator, electric contact thermometer control is good / whether it is burnt or damaged

Repair / Replace

plus
wet
Do not
Accept
control

Whether the instrument display / control is normal

Repair / Replace

Is the meter setting correct / is it manual output

Reset

Whether the actuator contactor, relay contacts are stuck or burnt out / whether the thyristor, solid state relay is broken

replace

Whether the actuator heating tube is on the ground

Repair / Replace

plus
heat
Do not
Accept
control

Whether the instrument display / control is normal

Repair / Replace

Is the meter setting correct / is it manual output

Reset

Whether the actuator contactor, relay contacts are stuck or burnt out / whether the thyristor, solid state relay is broken

replace

Whether the heating element and heating wire of the actuator are on the ground

Repair / Replace

Whether the controller, regulator, electric contact thermometer control is good / whether it is burnt or damaged

Repair / Replace

plus
wet
slow

Whether the meter setting is correct

Reset

Whether the total resistance of the humidification component is normal / whether there is short circuit or open circuit

Repair / Replace

Whether the water supply control system is normal / whether the float is leaking

Repair / Replace

plus
heat
slow

Whether the meter setting is correct

Reset

Whether the total resistance of the heating element is normal / whether there is short circuit or open circuit

Repair / Replace

Whether the blower system is operating normally / whether the steering is correct

Adjustment / Repair

no
Electricity
source

Whether the external power supply is connected / whether the voltage is normal

Reconnect

Whether the power inlet / connection contact is good

Whether the power insurance contact is good / whether it is burnt or damaged

Reinstall / replace fuse (seat)

whole
machine
no
law
start
move

Whether the connection is good

Reconnect

Whether the main switch contact is good / whether it is burnt or damaged

Repair / Replace

Whether the contactor or relay contact is good / whether it is burnt or damaged

Whether the instrument over-temperature setting is correct / whether it is burnt or damaged

Reset / replace

Whether the phase sequence connection of the power inlet (phase sequence relay) is correct / whether it is damaged

Reconnect / replace

Whether the pressure adjustment of the pressure controller is correct / whether it is burnt or damaged

Readjust / replace

control
system
Device
work
Make
different
often

Whether the connection is good

Reconnect

Is the transformer broken

replace

Whether electronic components (transistors, diodes, etc.) are damaged

replace

Is the relay contact good / bad?

Repair / Replace

Is the regulator contact good / bad?

Repair / Replace

Is the electrical contact thermometer contact good / bad?

Repair / Replace

instrument
table
Obvious
Show
/
work
Make
different
often

1 No display

Whether the connection is good

Reconnect

Whether the meter is burnt / damaged

Repair / Replace

2 display abnormal

Whether the connection is good

Reconnect

"HH": platinum resistance is broken / instrument is broken

replace

"LL": Platinum resistance short circuit / instrument broken

replace

3 work abnormal

Abnormal setting: whether the setting is correct / the instrument is broken

Reset / Repair / Replace

No output: whether the setting is correct / the instrument is bad

Reset / Repair / Replace

Maloperation output: whether the platinum resistance wire contact is good / bad / instrument is bad

Reconnect / replace

except
wet
work
Make
different
often

Whether the connection is good

Reconnect

Whether the meter display is normal / whether there is output

Repair / Replace

Whether the meter setting is correct

Reset

Whether the dehumidification switch is on / whether the contact is good / whether it is burnt or damaged

On / Repair / Replace

Whether the contact of the actuator contactor is good / whether it is burnt or damaged / whether there is output

replace

Whether the compressor works normally / whether it is burnt or damaged

Repair / Replace

Is the pump running normally / is the steering correct?

Adjustment / Repair

system
cold
work
Make
different
often

Whether the connection is good

Reconnect

Whether the meter display is normal / whether there is output

Repair / Replace

Whether the meter setting is correct

Reset

Whether the cooling switch is on / whether the contact is good / whether it is burnt or damaged

On / Repair / Replace

Whether the contact of the actuator contactor is good / whether it is burnt or damaged / whether there is output

replace

Whether the pressure controller pressure adjustment, temperature controller temperature adjustment is correct / whether it is burnt or damaged

Readjust / replace

Whether the insurance contact is good / whether it is burnt or damaged

Reinstall / replace fuse (seat)

Whether the compressor works normally / whether it is burnt or damaged

Repair / Replace

Whether the solenoid valve control is normal / whether it is burnt or damaged

Repair / Replace

Whether the air-cooled system is operating normally / whether the steering is correct

Adjustment / Repair

Whether the water pressure and water temperature of the water cooling system are normal

Adjustment

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