Thiele PST700w Series, Instruction Manual, Page: 13 / 15

12
2-8 Cooling Fan Working Code
Cooling fan of inverter is through detecting output power and over temperature situation to
work.
When start to turn on the inverter and output power under 300W, the cooling fan does not start
running. It complies with saving energy sources requirement. Until, output power is up to 300W,
the cooling fan will start to work in order to drop the inner temperature.
If the ventilation opening is obstructed, the inverter will enter Over Temperature Protection
mode (OTP). The cooling fan will continue working to drop the inner temperature. When the
temperature comes down to normal situation, the inverter will turn on automatically.
3. Maintenance
Very little maintenance is required to keep your inverter operating properly.
You should clean the exterior of the unit periodically with a dry cloth to prevent accumulation of
dust and dirt. At the same time, tighten the screws on the DC input terminals.
4. Troubleshooting Guide
WARNING!
Do not open or disassemble the inverter. Attempting to
service the unit yourself may result in a risk of electrical shock
or fire.
Problem and Symptom Possible Cause Solution
Low output voltage
(110V: 95-105VAC
220V: 190-210VAC)
Using average reading
voltmeter Use true RMS reading meter
and cable. (Ref. point 2-4-7).
Load display OLP flash Over load Reduce load
No output voltage
Fault input voltage Input Undervoltage
Input Overvoltage
Recharge battery,
check connections and cable.
(Ref. point 2-5 & point 2-6)
No output voltage
Over temp indicator
Load less than 500W
Thermal shutdown
Improve ventilation.
Make sure ventilation openings
in inverter are not obstructed.
Reduce ambient temperature.
No output voltage
Over load indicator Short circuit or wiring error
Very high power load
Check AC wiring for short
circuit or improper polarity. (hot
and neutral reversed)
Remove load.
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Thiele KG
• V
orderer W
einberg 26 • D-71522 Backnang • T
el.: +49 (0)7191 3560-0
• Fax.: +49 (0)7191 3560-19
• info@thiele-kg.de
• www
.thiele-kg.de
Thiele KG
• V
orderer W
einberg 26 • D-71522 Backnang • T
el.: +49 (0)7191 3560-0
• Fax.: +49 (0)7191 3560-19
• info@thiele-kg.de
• www
.thiele-kg.de
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