Measure To Take When E505, E506 Error Occurs - Samsung DVM S Series Installation Manual

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 0.2MPa?
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* on
Is the actual pressure* different from the
value on the pressure sensor?
Perform Auto Trial Operation again
108
Yes
opened?
Yes
connected to the PBA?
Yes
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.