Daikin RZQ125B7W1B [236/326] Open phase or power supply voltage imbalance p1

Daikin RZQ140B7W1B [236/326] Open phase or power supply voltage imbalance p1
Error Codes: Outdoor Units ESIE05-03
3–88 Part 3 Troubleshooting
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3.19 Open Phase or Power Supply Voltage Imbalance (P1)
Remote Controller
Display
P1
Method of
Malfunction
Detection
Malfunction is detected according to the voltage waveform of main circuit capacitor built in inverter.
Malfunction
Decision
Conditions
When the aforementioned voltage waveform becomes identical with the waveform of the power supply
open phase.
Supposed Causes
P Open phase
P Voltage imbalance between phases
P Faulty main circuit capacitor
P Power unit (Disconnection in diode module)
P Faulty outdoor unit PC board
P Faulty Magnetic Relay (K11R, K12R)
P Improper main circuit wiring
ESIE05-03.book Page 88 Wednesday, April 6, 2005 4:09 PM

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