Dead Dishwasher — Possible Bad Fuse
Fast Track Troubleshooting
Models:
DMR57LFB/XAA
DMR57LFS/XAA
DMR57LFW/XAA
DMR77LHB/XAA
DMR77LHS/XAA
DMR77LHW/XAA
DMR78AHB/XAA
DMR78AHS/XAA
DMR78AHW/XAA
Publication # tsDMR57 Creation Date 01/21/2010
IMPORTANT SAFETY NOTICE – “For Technicians Only” This service data sheet is
intended for use by persons having electrical, electronic, and mechanical experience
and knowledge at a level generally considered acceptable in the appliance repair trade.
Any attempt to repair a major appliance may result in personal injury and property
damage. The manufacturer or seller cannot be responsible, nor assume any liability for
injury or damage of any kind arising from the use of this data sheet.
Program Drain
Pre-wash
1
Pre-wash
2
Pre-wash
3
Main
wash
Rinse 1 Rinse 2 Rinse 3 Dry
Total
Time
Normal
0:45 16:30 (16:30) - 32:30:00 7:30 (7:30) 32:30:00 20 110~134
Heavy
0:45 17:30 17:30 17:30 46:30:00 7:30 7:30 46:30:00 20 181
Delicate
0:45 16:30 - - 37:30:00 7:30 - 32:30:00 20 115
Rinse
0:45 - - - - 9:30 - - - 11
Quick
0:45 5:30 - - 11:30 7:30 - 12:30 - 38
Smart Auto
0:45
5:30
~17:30
(17:30) (17:30)
11:30
~46:30
7:30 (7:30)
12:30
~46:30
20 58~181
No
Sanitize
Sanitize
Normal
----
120?F
(49?C)
--
140?F
(60?C)
162?F
(72?C)
Heavy
----
149?F
(65?C)
--
158?F
(70?C)
162?F
(72?C)
Delicate
----
113?F
(45?C)
--
140?F
(60?C)
162?F
(72?C)
Rinse
---------
Quick
----
113 ?F
(45?C)
--
140?F
(60?C)
162?F
(72?C)
Smart Auto
----
113~149?
F
(45~65?C)
--
140~158?
F
(60~70?C)
162?F
(72?C)
Pre-wash 1,2,3 Rinse 1,2 Program
Main
wash
Rinse 3
Dishwasher Cycle Chart — Condensation Dry System
Which Detergent Ingredients Give Best Dishwasher Performance
Detergent with a separate rinse additive in the dispenser gives better drying performance.
For tough baked on soils an Enzyme detergent is better at hydration of the food soils.
For staining such as tomato, coffee and tea, a detergent with a higher phosphate content
and Chlorine bleach will work on the stains much better than an Enzyme based detergent.
• Units with a fuse, if it blows there is very low A/C voltage at PCB L1 to N, L1 to Ground will read 120vac.
• Replace fuse and unit may work properly, usually a "weak fuse“.
• Neutral is fused, use caution as L1 is hot, you will be “shocked” between L1 and Chassis.
• Later production the fuse is "hidden" in the wire harness.
• Newer production (May 2009 Serial *S5*) has no fuse. Dead unit, look for cause,
. if none, replace main PCB (new part #)
