Maytag MDB series Service Manual page 30

DIAGNOSTICS & TROUBLESHOOTING
Troubleshooting Guide (continued)
CUSTOMER
DESCRIPTION
NOISY OPERATION SPRAY ARM STALLED OR BLOCKED AND
SPRAYING ON THE DOOR.
NO OR LOW WATER
DRAINS TOO LONG
LOOSE CONNECTION IN VENT CIRCUIT AND/
OR OPEN VENT WAX MOTOR.
OPEN FUSE ON CONTROL TO VENT
VENT DRIVE CIRCUIT ON CONTROL
FAN RUNS (MAKES NOISE) AFTER CYCLE
COMPLETED (ON MODELS WITH FAN).
EXCESSIVE FAN NOISE DUE TO FAULTY FAN
(ON MODELS WITH FAN).
LEAKS OR DRIPS ON LOOSE CONNECTION IN VENT CIRCUIT AND/
CABINET OR FLOOR OR OPEN VENT WAX MOTOR.
OPEN FUSE ON CONTROL TO VENT.
VENT DRIVE CIRCUIT ON CONTROL.
FAN PROBLEM (ON MODELS WITH FAN)
TOO MANY SUDS
LEAKING DISHWASHER
UNIT NOT LEVEL (LEANING FORWARD) AND
WATER SURGES OVER FRONT LIP DURING
CYCLE.
AIR PRESSURE SURGE WHEN DOOR IS
OPENED AND IMMEDIATELY CLOSED WHILE
DISHWASHER IS HOT CAN FORCE DROPLETS
OUT THE VENT DUCT.
2-16 Maytag Chopper Dishwashers
n
For Service Technician Use Only
POTENTIAL CAUSES CHECK
- INSTRUCT CUSTOMER IF BLOCKED.
- CHECK SPRAY ARM ROTATION AND INSPECT FOR PLUGGED
NOZZLES. IF PLUGGED, CLEAN NOZZLES AND CONFIRM FILTERS
INSTALLED PROPERLY.
REFER TO "SERVICE ERROR CODES TABLE."
1. LONG DRAIN DUE TO OWI SENSOR PROBLEM. "REFER TO
SERVICE ERROR CODES TABLE" FOR 3-3.
2. SLOW DRAIN PROBLEM. "REFER TO SERVICE ERROR CODES
TABLE" FOR 8-1.
UNPLUG DISHWASHER OR DISCONNECT POWER AND CHECK
RESISTANCES OF VENT WAX MOTOR AND ALL CONNECTIONS IN
THE VENT CIRCUIT. FIX/REPLACE OPEN CONNECTION/PART.
REFER TO "FUSE SERVICE CHECK" ON PAGE 3-4 IN "TESTING"
SECTION.
UNPLUG DISHWASHER OR DISCONNECT POWER AND REPLACE
CONTROL.
DISHWASHER IS DESIGNED TO KEEP FAN RUNNING AFTER CYCLE
TO PREVENT MOISTURE BUILDUP IN DISHWASHER. FAN WILL
TURN OFF IF DOOR IS OPENED LONGER THAN 5 SEC. INSTRUCT
CUSTOMER.
1. CHECK FAN OPERATION DURING SERVICE DIAGNOSTICS TEST
CYCLE.
2. UNPLUG DISHWASHER OR DISCONNECT POWER.
3. REPLACE FAN IF DOES NOT SPIN FREELY.
UNPLUG DISHWASHER OR DISCONNECT POWER AND CHECK
RESISTANCES OF VENT WAX MOTOR AND ALL CONNECTIONS IN
THE VENT CIRCUIT. FIX/REPLACE OPEN CONNECTION/PART.
REFER TO "FUSE SERVICE CHECK" ON PAGE 3-4 IN "TESTING"
SECTION.
UNPLUG DISHWASHER OR DISCONNECT POWER AND REPLACE
CONTROL.
REFER TO "SERVICE ERROR CODES TABLE."
REFER TO "SERVICE ERROR CODES TABLE."
CHECK DOOR/TUB GASKET AND ALL WATER CONNECTIONS
UNDER DISHWASHER. REFER TO "SERVICE ERROR TABLE."
CHECK ERROR HISTORY FOR FLOAT ERROR 6-4. ERROR 6-4 IS
LIKELY TO OCCUR IF UNIT IS SIGNIFICANTLY OUT OF LEVEL AND
LEANING FORWARD. REFER TO "SERVICE ERROR TABLE."
INSTRUCT CUSTOMER TO LEAVE DOOR OPEN A FEW MINUTES
BEFORE RE-CLOSING IF OPENED WHILE DISHWASHER IS HOT.
ERROR
CODES
6-1, 6-2
6-3, 6-4
3-3, 8-1
10-3
6-3, 6-4
6-1, 6-3
6-4