Daikin VRV III-S RXYMQ36 48PVJU, Руководство по обслуживанию

Страница: 155 / 264

Troubleshooting by Indication on the Remote Controller SiUS34-907
146 Troubleshooting
3.21 “
H9
” Malfunction of Thermistor (R1T) for Outdoor Air
Remote
Controller
Display
H9
Applicable
Models
RXYMQ36 · 48PVJU
Method of
Malfunction
Detection
Malfunction is detected from the temperature detected by the outdoor air thermistor.
Malfunction
Decision
Conditions When the outside air temperature thermistor has short circuit or open circuit in operation
Supposed
Causes

Defective thermistor connection

Defect of thermistor (R1T) for outdoor air

Defect of outdoor unit PCB (A1P)
Troubleshooting
∗
Refer to “Thermistor Resistance / Temperature Characteristics” table on P.241.
Replace the thermistor (R1T).
Resistance
is normal w hen
meas u red after disconnecting
the thermistor (R1T) from
the o u tdoor u nit PCB.
(3.5k
W
to
360k
W
)
Connector is
connected to X11A of o u tdoor
PCB (A1P).
Replace the o u tdoor u nit PCB
(A1P).
N O
Connect the connector and t u rn
on again.
N O
YES
Caution
Be s u re to t u rn off the po w er s w itch b efore connecting or disconnecting the connector, or parts may b e damaged.
Confirm w hich thermistor is a b normal
u sing o u tdoor u nit " monitor mode".
(Refer to P.105, 106)
YES