Specifications

ManualsBrandsDean ManualsFryerTC25

6. TROUBLESHOOTING (TC 25 and TC 35 Millivolt Systems):

6.1 PROCEDURES: The problems and

possible solutions given in this section

cover those most commonly encountered.

To troubleshoot, perform the test set-up at

the beginning of each condition. Follow

each step in sequence as shown in the

troubleshooting charts.

6.2 SET-UP: Follow start-up procedures

found in Section 3.6, Initial Start-Up,

starting on page 6 of this manual.

Attempt to light the pilot, then choose one

of the tables in Section 6.4 and follow the

table to diagnose the problem.

6.3 RECOMMENDED SPARE PARTS:

High Limit Switch - P/N# 2507

Operating Thermostat – P/N#2557

Gas Safety Control Valve – P/N#1896

(Natural Gas units only)

Gas Safety Control Valve – P/N#1909

(Propane units only)

Thermopile – P/N#2513 (Millivolt units

only)

6.4 TROUBLESHOOTING DIAGRAMS AND CHARTS:

FOR DETAILED TROUBLESHOOTING AND SERVICE-RELATED INFORMATION, CALL THE

DEAN SERVICE HOTLINE AT 1-800-551-8633.

A Pilot fails to light.

1. Check to see that gas lines are connected to the

fryer.

2. If a safety cut-off valve was installed in the gas

service line leading to the fryer, check to see if that

safety cut-off valve is in the “OPEN” position.

3. Re-light pilot. When attempting to re-light the pilot,

ensure combination gas valve manual knob is

depressed for at least one minute.

4. If pilot doesn’t light after following steps 1-3, call

for service.

Pilot fails to remain

lit.

1. Depress gas knob and turn to “OFF” position. Wait

5 minutes to allow any accumulated gas vapors to

disperse.

2. Check thermopile leads to ensure leads are

connected to the gas valve. Use millivolt wiring

diagrams on page 16 to identify which wires belong

to the thermopile. Reconnect thermopile lead wires

if necessary.

3. Depress gas knob and turn to “PILOT” position.

Re-light the pilot, holding the dial in longer before

releasing.

4. It may take several attempts to re-light until the gas

line is purged of any trapped air and a constant gas

flow is attained.

5. If steps 1-3 fail to correct problem, call for service.