-
-
'15 • HM-T-246
. Applicable model
. Troubleshooting
All models
Diagnosis
Countermeasure
*
*
Does the
fan motor of heat pump
water heater rotate smoothly when
turning it by hand?
NO
NO
NO
YES
Save the Mente PC data of 30 minutes
before stopping
Power source OFF (Wait for 3 minutes)
Power source ON
Disconnect the connectors of fan motor
& CN15V connector from control PCB
Switch over the control signal for 2 fan motors
by changing over the connectors on control PCB
Power source OFF (Wait for 3 minutes)
Connect the connector of fan motor
Power source ON
Power source OFF (Wait for 3 minutes)
Power source ON
Is DC15V detected
at CN15V connector on
harness side?
Is DC15V detected
at CN15V connector on
the control PCB?
YES
Reconnect CN15V connector
Does
E48 recur 10 seconds after starting
compressor?
NO
YES
YES
Does
the faulty fan motor switch to
the other one?
NO
* Measure DC15V whiout
starting operation
YES
• Check the operation status
and record it.
Replace fan motor
Repalce power P CB
Repalce control P CB
Wait and see
(If possible, collect the
operation data continuously
with MenteP C)
Since other error may
occur, rectify according
to the troubleshooting
procedure of the error
occurred
Replace fan motor
Replace control P CB
. E rror detection method
• When 00min
-
or lower of
fan rotating speed command
and the status of over
current are detected 0 times
continuously.
• When 00min
-
or lower of
actual fan rotating speed
is detected for 0 seconds
continuously
(Fan motor is locked)
. Condition of error displayed
Same as above
. P resumable cause
• Disconnection of wiring
harness or loose connection of
connector
• Fan motor anomaly
• Control P CB anomaly
N ote:
If the same error does not reappear, continue to get data with Mente P C.
Error code
Remote control:
7-segment display:
LED
Green
Red
Heat pump
water heater
Keep
flashing
*1
Content
E
E -,
Heat pump water heater
DC fan motor anomaly
AMP Air Conditioning
www.ampair.co.uk | [email protected]
Содержание ESA30E-25
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