Samsung AM JXVHGH Series Installation Manual page 114

Inspection and trial operation
Measure to take when E505, E506 error occurs
Keep all the outdoor units in vacuum mode for 5 min .
- See the instructions on Key operation modes .
No .
Is the deviation between pressure sensors on
outdoor units greater than 0 . 2 MPa?
Is the ball valve (service valve) on each outdoor unit
Are the pressure sensor connectors properly
Is the pin-to-pin voltage between pins #
3 and 4 of the pressure sensor terminal*
Is the actual pressure* different from the
value on the pressure sensor?
Perform Auto Trial Operation again
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DVM S HE_IM_DB68-05461A-08_EN.indd 114
Yes
opened?
Yes
connected to the PBA?
Yes
on the Hub PBA 5V?
Yes
The actual pressure can be checked by calculating the saturation
*
pressure for the outdoor air temperature or connecting a
manifold gauge .
No .
No .
Open the valve .
No .
Take corrective measures .
No .
Replace the Hub PBA .
Yes
Replace the pressure sensor .
2017-03-24 오후 1:38:49