Possibly calcuim deposit
You could try and wipe the film off with some vinegar and a cloth. If this works then simply check that there is rinse aid and salt in the machine and that the dishwasher is set up according to the hardness of the water in your area. If you are using 'all in one' tablets instead then you can try putting some salt in to enhance the cleaning results from the tablets. Also check the cap on the salt compartment is shut tightly.
You could try and wipe the film off with some vinegar and a cloth. If this works then simply check that there is rinse aid and salt in the machine and that the dishwasher is set up according to the hardness of the water in your area. If you are using 'all in one' tablets instead then you can try putting some salt in to enhance the cleaning results from the tablets. Also check the cap on the salt compartment is shut tightly.
If the vinegar does not remove these marks, then the marks have been left by hard water deposits that are found in your water supply. Simply add salt to the dishwasher in the container at the bottom of the tub. In hard water areas this may need to be set to the maximum dosage. Your local water supplier can advise you if the water where you live is hard or soft.

example of the cloudy marks left by hard water
Phone 03446 923 608 and we’ll assess the best resolution for your problem.
This solution applies to the following models:
Dishwashers
- DDY 062 - 32000621
- DDY 062B - 32000898
- DDY 062S - 32000762
- DDY 088T - 32000696
- DDYN 162 - 32000971
- DYM 762T WIFI - 32000956
- DYM 762TX WIFI - 32000957
- DYM 886TPW - 32000970
- HDI 1L38-80 - 32900578
- HDI 1LO38B-80 - 32900692
- HDI 1LO38S-80 - 32900693
- HDI 1LO63B-80 - 32900694
- HDI 1LO63S-80 - 32900695
- HDI 2D949-80 - 32900603
- HDI 2T623PWF-80 - 32900696
- HDI 3DO623D-80 - 32900698
- HDIN 2L360PB-80 - 32900769
- HDIN 4D620PB-80 - 32900788
- HDP 1DO57W - 32001107
- HDP 1T64PW3B-80 - 32001174
- HDP 1T64PW3W-80 - 32001173
- HDP 2T62FW-80 - 32001023
- HDP 2T62FX-80 - 32001024
- HDP 3DO62DW - 32001171
- HDP 3DO62DX - 32001172
- HDP1D39W - 32001003
- HDP1D39X - 32001097
- HDP1DO39W - 32001164
- HDP1DO39W - 32001213
- HDP1DO39X - 32001176
- HDP2D1049B - 32001080
- HDP2D62B - 32001106
- HDP2D62W - 32001098
- HDPA1DO39W - 32001175
- HDPN 1L390OA - 32001234
- HDPN 1L390OW - 32001233
- HDPN 1L642OB - 32001265
- HDPN 1L642OW - 32001264
- HDPN 1L642OX - 32001266
- HDPN 1S643PB - 32001239
- HDPN 1S643PW - 32001238
- HDPN 1S643PX - 32001240
- HDPN 2L350OW - 32001216
- HDPN 2L620OW - 32001230
- HDPN 4S603PX - 32001217
- HDPN 4S622PA - 32001215
- HDYN 1L390OA - 32001235
- HDYN 1L390OB - 32001237
- HDYN 1L390OW - 32001236
- HED 120B/1 - 32000879
- HED 120S/1 - 32000878
- HED 120W/1 - 32000877
- HED122B/80 - 32001092
- HED122S/80 - 32001091
- HED122W/80 - 32001090
- HED6612 - 32000311
- HEDS 1064 - 32000683
- HEDS 1064B - 32000972
- HEDS 1068X - 32000681
- HEDS668 - 32000330
- HEDS668 S - 32000331
- HEDS968-80 - 32000496
- HEDS968S-80 - 32000497
- HEDS988BL-80 - 32000500
- HFI 3015/E - 32900340
- HFI 3015-80 - 32900047
- HFI 303D/E-8 - 32900362
- HFI 4015-80 - 32900085
- HFI 550/E - 32900194
- HFI 550/E-80 - 32900376
- HFI 55-80 - 32900135
- HFI 6072-80 - 32900586
- HFI3015/1-80 - 32900199
- HFI5G10/1-80 - 32900218
- HLSI 363 - 32900515
- HLSI 433GT - 32900517
- HLSI 460PW - 32900518
- HLSI 500GT-S - 32900251
- HLSI 550GT - 32900349
- HLSI 550GT - 32900373
- HLSI 762GTWIFI - 32900494
- HLSI400PW - 32900380
- HND7102 - 32000410
- HND8510-80 - 32000465
- HOD6615 - 32000328
- HOD6615B - 32000329
- HOD7715 - 32000298
- HPD2D1049W - 32001078