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5. Maintenance and Repair
5.1 Blower
1) Clean the blower regularly (especially the air inlet path).
2) Eliminate the fan's dirt regularly to avoid the damage to the blower.
Attention！
No need for regular inspection because all the electrical parts in the
control unit are fixed tightly!
6. Troubleshooting
Fault Possible Reasons Solution
Blower rotating on
the contrary with
arrow
Blower circuit connection reverse
phase.
Exchange two of theel ectrical
wires.
Blower not turning
hot air pipe reeky
1. Motor fault.
2. Failures of solenoid switch.
1. Check and change.
2. Change or repair.
Blower not rotating
and not heating
1. Overload jumped.
2. Transformer fault.
3. Fuse melted.
4. Power supply fault.
1. Check and change.
2. Check and change.
3. Check and change.
4. Check if lack of phase.
No temperature for
blower running
1. Plumb slip of heater pipe melted.
2. Magnetic switch fault.
3. Heater pipe fault.
4. Power supply fault.
5. Thermocouple fault.
1. Check and change.
2. Check and change.
3. Check and change.
4. Check if lack of phase.
5. Change.
The blower can run
but temperature is
too low
1. Plumb slip of heater pipe fault.
2. EGO jumped or breaking.
3. Magnetic switch is lack of phase.
4. Temperature controller is
damaged or its error is too much.
1. Check and change.
2. Check or re-set.
3. Check and change.
4. Change the temperature
controller.
The blower can run
but temperature is
too high
1. Hot-air pipe is jam.
2. Temperature controller is fault or
its error is too much.
3. Electromagnetic switch contacts
stuck up.
1. Cleaning.
2. Change the temp. Controller
or adjust inching switch.
3. Change.
Notes: Before inspecting or changing spare parts, ensure the main
switch should be off.
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