Frymaster L.L.C., 8700 Line Avenue 71106, P.O. Box 51000, Shreveport, Louisiana 71135-1000
318-865-1711 FAX 318-862-2394
Printed in the United States Service
Hotline
Page
16
1-800-24-FRYER
Output power
•
With the computer plugged in and turned on, check for 14VDC from pin 5 on the computer
terminal to ground.
10.3 Transformer
Symptom:
Unit has no display
Test:
•
Line voltage should be measured across the
input side of the transformer; 12VAC should be
measured across the output side.
10.4 Plate Heater RTD
The following tests are conducted without power
applied.
Symptom:
Unit displays Probe. Actual plate temp is
not within 5°F of setpoint. Temperature must be
taken from thermocouple built into unit.
Test:
•
With power removed from the HLZ, measure
resistance between pins 9 and 13 on the
computer plug and compare readings to listing on
the resistance chart. With the unit cool, the
resistance reading should approximate the
resistance shown on the chart for the room temperature. Also check for short to ground. A
chaffed wire shorting to the chassis can produce resistance readings within proper range.
10.5 Air RTD
Symptom:
Unit displays Probe. Actual air temp is not within 5°F of setpoint.
Test:
•
With power removed from the HLZ, measure resistance between pins 14 and 15 on the
computer plug and compare with air temperature on the resistance chart in this section.
Also check for short to ground. A chaffed wire shorting to the chassis can produce
resistance readings within proper range.
Centegrade
Fahrenheit
Ohms
21
70
1080
27
80
1101
32
90
1122
38
100
1143
43
110
1164
49
120
1185
54
130
1206
60
140
1226
66
150
1247
71
160
1268
77
170
1289
82
180
1309
88
190
1330
93
200
1350
99
210
1371
104
220
1391
110
230
1412
116
240
1432
121
250
1453
127
260
1473
132
270
1493
138
280
1514
143
290
1534
149
300
1554
Resistance chart
Resistance Chart
