Grundig GHP-MM08, Руководство по обслуживанию

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Heat Pump Monobloc Inverter / User Manual
202202 Heat Pump Space Heater 76
4.4.25 E34 Diagnosis, analysis and action
4.4.25.1 Diagnosis
Code E34 will occur when there is an abnormal main circuit voltage.
4.4.25.2 Possible causes
!
Actual power supply voltage is not within ±10% of rated voltage.
!
Heat pump is powered on immediately after power-off.
!
Loosened wiring within electric control box.
!
High voltage circuit error.
!
Drive PCB is damaged.
4.4.25.3 Analysis and action
Yes
NO
NO
Yes
Yes
Yes
NO
NO
E34
Wires on drive PCB and electric control box
power supply terminals are loose?
Power supply voltage is not within ±10%of
rated voltage?
Replace or repair the
relevant parts
Heat pump is powered on immediately
after power-off?
Provide normal power
supply
Ensure wires are
connected properly
After the power is off, wait
at least 3 minutes and
then power it on again
Replace drive PCB
High voltage circuit error has occurred, such
as the compressor has malfunctioned, the
fan motor has short-circuited, or the
inverter module had a short circuit