Troubleshooting Procedures
!WARNING
To avoid risk of electrical shock, personal injury or death, disconnect power to unit before servicing, unless testing requires power.
Diag. | Description | Trigger | Action to be | |
Code |
|
| taken | |
|
| Tach signal |
| |
|
| exists without |
| |
| Motor tach | torque | Displays " bE". | |
| signal exists | command or | ||
25 | without | when not | Replace Machine | |
| motor | expected | Control Board. | |
| running. | (Abnormal |
| |
|
| condition |
| |
|
| only). |
| |
| Not Used | |||
|
|
|
| |
| Sump | Abnormal | Displays " tE". | |
| high/low temp | - Loose or pinched | ||
| thermistor | |||
29 | or ohm | wires | ||
failure | ||||
| resistance | - Bad sump | ||
| (Optional) | |||
| seen | thermistor | ||
|
| |||
| Not Used | |||
|
|
|
| |
|
| Machine | Display “E3” | |
|
| control is | Evaluate wire | |
|
| attempting to | harness for loose or | |
| Motor Drive | drive the | unhooked | |
| motor but is | connections. If | ||
| failure | |||
2E | not seeing | machine has | ||
(Locked, Hall | ||||
| any tach | separate motor | ||
| sensor fault) | |||
| response. | control, perform self | ||
|
| |||
|
| Visual check | diagnostic motor | |
|
| shows motor | test. See “Board | |
|
| is not moving. | Output Test” | |
|
| Machine | Display "Sr". | |
| System | control does | ||
34 | not see relay | Replace machine | ||
Relay failure | ||||
|
| open when it | control board. | |
|
| should. |
| |
35 |
| Not Used | ||
|
|
|
| |
Diag. | Description | Trigger |
| Action to be |
Code |
|
|
| taken |
36 | Heater relay | Heater Relay |
| Display "Hr". |
failure. | Check signal |
| Replace Machine | |
| not sensed. |
| Control Board. | |
|
|
| ||
|
|
|
| Displays |
| Motor failure | Over Current |
| "3E".Check the |
3E | (Over | is detected. |
| motor windings, the |
Motor won't |
| speed sensor, | ||
| current) |
| ||
| turn. |
| wiring connections, | |
|
|
| ||
|
|
|
| or Control Board. |
| Not Used | |||
|
|
|
|
|
| Voltage for | Voltage for |
| Display |
| motor control |
| ||
91 | motor control |
| "2E".Replace | |
bus is over | bus is over |
| Machine Control | |
| specified |
| ||
| limit |
| Board. | |
| limit |
| ||
|
|
|
| |
| Voltage for | Voltage for |
| Display |
92 | motor control | motor control |
| "2E".Replace |
specified | bus is under |
| Machine Control | |
|
| |||
| limit | specified limit |
| Board. |
Exit Service Mode
To exit:
1)Press Chime and Extra Rinse keys for 3seconds again, or
2)Press Off, or
3)Unplug the machine. After five (5) minutes of inactivity (user key presses) in Service Mode, the machine will exit the Service Mode and resume normal operations. Pressing the Off key will completely exit Service Mode. If a cycle is running, cancel the cycle. Pressing the Rotary Selector knob while running a test will pause the individual test, while remaining in Service Mode. A power loss during Service Mode will cancel this mode.
20 | 16025909 Rev. 0 | ©2005 Maytag Services |
