Troubleshooting Guide - GE DEH-40417 Service Instructions Manual

Troubleshooting Guide

This guide is provided for troubleshooting and isolating common problems. It does not cover every possible situation.
Contact the Customer Support Center at 800-843-3742 if any problem is not resolved by these procedures.
S y m p t o m o r E r r o r & ( E r r o r C o d e ) S y m p t o m o r E r r o r & ( E r r o r C o d e )
Display OFF
Equipment does not respond to STOP /
START controls
Frequency error (admits
45Hz f main 65Hz)
Overload trip
Synchronism loss
Phase A, B, C thyristor
Heatsink thermostat
Motor thermistor(Ex18)
Phase A, B, C loss
Stalled rotor
Internal error
Long start time
Lock-out
Undervoltage
Overvoltage
Undercurrent
Overcurrent
Prices and data subject to change without notice.
P o s s i b l e C a u s e P o s s i b l e C a u s e
No control voltage.
Main breaker tripped or fuse blown
F1 fuse blown on power supply PCB
Bad connection of flat ribbon wire
joining power supply PCB to control
PCB
F2 fuse blown on power supply PCB
No 1 L 1 1 L 1 phase or frequence is out of
(Ex10) range
(Ex11) Excessive load or excessive current
during starting
(Ex13) Phase 1 L 1 1 L 1 lost
(Ex14) Short circuited thyristor
(Ex15)
(Ex16)
No output phases
(Ex17) Heatsink thermostat tripped by
overheating or defective
Motor thermistor tripped by
overheating or defective
(Ex19) No input / output phases
(Ex20)
(Ex21)
Defective thyristor or ribbon wire
harness loose or defective
(Ex22) Equipment detected stalled motor
rotor
(Ex23) Micro-controller malfunction
(Ex25) Current limit condition present more
than2 x ta sec. or 240 sec. (ta =
acceleration ramp time)
(Ex27) The time between startings is less
that the adjusted in parameter "LKxx"
(Ex28) The line voltage exceeds of limit set in
(Ex29) parameters "UVxx" or "OVxx"
(Ex30) The motor current exceeds of limit set
(Ex31) in parameters "UCxx" or "OCxx"
®
ASTAT -IBP Plus Service Instructions
M e a s u r e s t o B e T a k e n M e a s u r e s t o B e T a k e n
Check wire harness and control voltage
Check and change.
Verify connectors.
Check power supply board and logic
board for 5VDC. Use a DC voltmeter on
the power supply board, (-) lead of
voltmeter on the top lead of C6 (located
next to the black heatsink on the right
edge of the power supply board) and the
(+) lead of voltmeter on top lead of Diode
AD21 or R25 (located on the upper right
corner of the power supply board.)
Check and change.
Check 1 L 1 1 L 1 phase and/or mains
frequence
Verify overload conditions during starting
time and steady state. Check settings in
parameters "Nxxx", "Lxxx", and "oxxx"
Check 1 L 1 1 L 1 phase
Check thyristor module.
Check ground connections and voltage to
ground.
Poor ribbon cable connection
Check 2 T 1 , 4 T 2 2 T 1 , 4 T 2 and 6 T 3
Check for adequate ventilation.
Check thermostat and wiring
Check thermistor and wiring, if no
thermistor terminal 5 and 6 must be
jumpered
Check power wire harness for 1 L 1 ,
3 L 2 , 5 L 3 , 2 T 1 , 4 T 2 and 6 T 3 3 L 2 , 5 L 3 , 2 T 1 , 4 T 2
Verify gate and cathode wire harness.
Verify thyristors
Restart equipment and check for an
appreciable loss in motor speed at any
time
Check IC1 and IC8 are correctly inserted
in their sockets.
Check for noise on control voltage power
or line
Increase current limit and / or acceleration
ramp time
Check if settings are correct.
This protection may be disabled
Check if settings are correct.
This protection may be disabled
Check if settings are correct.
This protection may be disabled
6 T 3 phases
1 L 1 ,
6 T 3
11