Main Protection - Pioneer WYB-GMFI SERIES Service Manual

8.3 Main Protection

8.3.1 Three Minutes Delay at restart for compressor
1 minute delay for the 1
8.3.2 Temperature protection of compressor top
The unit will stop working when the compressor top temp. protector cut off, and will restart after the
compressor top temp. protector restart.
8.3.3 Temperature protection of compressor discharge
When the compressor discharge temp. is getting higher, the running frequency will be limited as below
rules:
---Compressor discharge temp. T5>115℃ for 5s, compressor stops.
---108<T5<115℃, decrease the frequency to the lower level every 3 minutes.
---90<T5<105℃, keep running at the current frequency.
----T5<90℃, no limit for frequency.
8.3.4 Fan Speed is out of control
When Indoor Fan Speed keeps too low (300RPM) for certain time, the unit will stop and the LED will
display the failure
8.3.5 Inverter module Protection
The Inverter module has a protection function about current, voltage and temperature. If these
protections happen, the corresponding code will display on indoor unit and the unit will stop working.
8.3.6 Indoor fan delayed open function
DEFROST indication lamp (For cooling & heating models only):
Lights up when the air conditioner starts defrosting automatically or when
the warm air control feature is activated in heating operation.
DIGITAL DISPLAY:
Displays the current setting temperature and malfunction/protection code
when the air conditioner is in operation.
Frequency display: This display is separated into five zones. The zones
illuminate based on the compressor current frequency. For example,
higher frequency will illuminate more zones.
st
time start-up and 3 minutes delay for others.
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