36(51)
5. Trouble-shooting
Symptom
Possible causes
Solution
EPROM Error
1. The machine halts when alarm rings, and it
is manually reset after faults are removed.
2. The ROM will be detected after being
electrified, and error occurs when ROM can
’
t
read right datum.
Re-power on. If the alarm rings again, there is
something wrong with the controller. Please
replace the controller or contact us.
Three-phase
power
source error
1. The machine halts when alarm rings, and it
is manually reset after faults are removed.
2. The part will be detected after being
electrified, and error occurs when power line
has reversed-phase connection or suffers
default phase.
3. The machine will be detected after being
electrified. If the [J3-10 input definition] is
three-phase electrical detection, alarm rings 2
secs. after effective J3-2 input.
Alarm will ring when either 2 or 3 is met.
1. Turn off the power switch, change the
three-phase AC power cord connection and set
a positive phase. After re-powering on, observe
whether the fault prompt has disappeared or not.
2. If the [J3-10 input definition] is three-phase
electric power detection, check whether the
setting of
“
always on
”
and
“
always off
”
of the
[external/three-phase power] is correct or not.
Regenerative
Blower
Overload
1. When alarm rings, drying blower/
regenerative blower (rotor motor) close and
heating stops. And they are automatically
reset after faults are removed.
2. The blower will be detected after being
electrified, and error occurs when the
regenerative blower overload input signal
proves to be effective and delays for 2 secs.
Open the electronic control box and press the
reset button on the thermorelay.
Check the machine if problem arises again.
Drying Blower Overload
1. When alarm rings, drying blower/
regenerative blower (rotor motor) close and
heating stops. And they are automatically
reset after faults are removed.
2. The blower will be detected after being
electrified, and error occurs when the drying
blower overload input signal proves to be
effective and delays for 2 secs.
Open the electronic control box and press the
reset button on the thermorelay.
Check the machine if problem arises again.
Regenerative
EGO
Overheat
1. Regenerative heating and overheat alarm
output close when alarm rings, and they are
automatically reset after faults are removed.
2. The part will be detected after being
electrified, and error occurs when the
regenerative EGO overheat input signal
proves to be effective and delays for 2 secs.
Check whether the setting of [regenerative EGO
overheat] and that of
“
normally open
”
and
“
normally
close
”
of overheat signal are correct or not.
Examine the regenerative blower, filter, air pipes and
air damper.
Drying EGO Overheat
1. Drying heating and overheat alarm output
close when alarm rings, and they are
automatically reset after faults are removed.
2. The part will be detected after being
electrified, and error occurs when the drying
EGO overheat input signal proves to be
effective and delays for 2 secs.
Check whether the setting of [regenerative EGO
overheat] and that of
“
normally open
”
and
“
normally close
”
of overheat signal are correct or
not.
Examine the drying blower, filter, air pipes and
air damper.
Содержание 4SDD-50U/200H
Страница 1: ...SDD Series Dehumidifying Dryer Date Oct 2018 Version Ver F English...
Страница 2: ......
Страница 41: ...41 51 6 Maintenance and Repair...