-
-
'15 • HM-T-246
Error code
Remote control:
7-segment display:
LED
Green
Red
Heat pump
water heater
Keep
flashing
Content
E
E
Water pump anomaly ()
In case the motor does not rotate
-time
. Applicable Model
. Troubleshooting
All models
Diagnosis
Countermeasure
YES
YES
When starting
operation after the power ON,
does the pump motor run?
Is
AC220-240V±5% detected
between L1 and N on the
TB1?
Is
AC200V±10% detected
between 3 and 4 on
the TB2?
NO
YES
Is
DC280V±10%
detected between 4P (Black)
and 6P(Red) connector
CN1 on the water
pump PCB?
YES
Is the
rotation speed of water pump
motor normalized?
YES
Is the LED2
on control PCB
flashing?
3 minutes later after the power OFF, disconnect the
connector CN1 on the water pump PCB connected to
the water pump and then start operation after the power ON.
NO
NO
NO
YES
NO
Check DC voltage between 3P
of CNPUM1 on the control PCB
and C48GND (located just
left below the control PCB ).
Less than DC2V
Control PCB can
get Vsp control
Is DC5V
detected between
4P of CNPUM1 and C48GND
on the control
PCB?
Replace water pump PCB
YES
NO
Replace the wiring
Is the
wiring connected to water
pump PCB & control PCB
normal?
NO
NO
DC5V
It is normal.
Check the power source
voltage and correct it.
Check the wiring harness
from control P CB to water
pump P CB.
If there is a problem, rectify
it.
If not, replace N oise Filter
P CB
Replace water pump P CB
Replace control P CB
Replace control P CB
Replace water pump motor
E nd
. E rror detection method
When it detects anomalous
difference between the rotation
speed command and the actual
rotation speed of water pump.
Or when it detects anoumalous
acutal rotation speed.
. Condition of error displayed
・
If the rotation speed difference
is 00min
-
or more
・
If anomalous actual rotation
speed is detected for minute
continuously.
. P resumable cause
・
Water pump anomaly
・
Control P CB anomaly
・
P ower source or power P CB
anomaly
・
Water pump P CB anomaly
N ote:
AMP Air Conditioning
www.ampair.co.uk | [email protected]
Содержание ESA30E-25
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Страница 91: ... 15 HM T 246 0 CAUTION AMP Air Conditioning www ampair co uk sales ampair co uk ...