Error Code Definitions And Solutions: Codes [4000 - 4999]; Error Code [4102] - Mitsubishi Electric HP120TNU-A Service Handbook

[7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ]

7-6

Error Code Definitions and Solutions: Codes [4000 - 4999]

7-6-1

Error Code [4102]

1. Error code definition
Open phase
2. Error definition and error detection method
An open phase of the power supply was detected at power on.
The open phase of the power supply may not always be detected if a power voltage from another circuit is applied.
3. Cause, check method and remedy
Cause
(1) Power supply problem
Open phase voltage of the power supply
Power supply voltage drop
(2) Noise filter problem
Coil problem
Circuit board failure
(3) Wiring failure
(4) Blown fuse
(5) Control board failure
HWE18220_GB
Check method and remedy
Check the input voltage to the power supply terminal block TB1.
Possible open phase in the power-supply due to improper pow-
er-supply wiring. (Refer to item (6) in section [6-1 Read before
Test Run].)
Check the coil connections.
Check for coil burnout.
[TNU models]
Check the wiring between CN13 on the noise filter and CNAC on
the control board.
Check the wiring between CN11 on the noise filter and CN110 on
the control board.
[YNU models]
Confirm that the voltage at the control board connector CNAC is
190 V or above.
If the voltage is below 190, check the wiring between each of the
following.
TB21/TB22/TB23 of the noise filter - CN2 of the noise filter -
Transformer Box - CNAC of the control board.
[TNU models]
Check that F001 on the control board is not blown.
If a blown fuse is found, check for a short-circuiting or earth fault
of the actuator.
Check noise filter fuses F001 and F002.
If a blown fuse is found, check for a short-circuiting or earth fault
of the actuator.
[YNU models]
Check the fuse F001 on the control board and the fuses F4 and
F5 next to the power-supply terminal block for a blown fuse.
If a blown fuse is found, check for a short-circuiting or earth fault
of the actuator.
Replace the control board if none of the above is causing the
problem.
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