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Corrections
9.1 Replace DIG-T2 board.
9.2 Replace ANL-T2 board.
9.3 Test the SSR (see symptom 34)
10.1 If an incorrect voltage is seen then check
across the input terminals of the circuit
breaker and the output from the wall outle
10.2 If correct voltages are seen across all
terminals on the block then the problem is
with the heater elements. Disconnect the
heaters and take an ohm reading across the
heater. A proper reading for each element
would be 43 ohms for a 208 volt heater or
53 ohms for a 230 volt heater (+/- 10%).
Possible cause check-up and tests
This can be the result of a failure of the control
circuit on the DIG-T2 board or of the heating
elements driver on the ANL-T2 board or the Solid
State Relay.
9.1 Check TP4. if the voltage is higher than
4VDC the problem is on DIG-T2 board.
9.2 If the voltage at TP4 is <1VDC the
problem could be either the ANL-T2 or
the SSR. Turn power off and remove the
wire from terminal 4 of the SSR. Turn
the power back on. If the heaters remain
off then the problem is with the ANL-T2.
9.3 If the heaters come back on the problem
is with the SSR.
10.1 Check for the proper voltage across the
output terminals of the circuit breaker.
10.2 With TP4 at or above 4 VDC check for
correct voltage across the terminals of the
heater element terminal block located
next to the main circuit breaker. The
2540 has two terminals and the 3870 has
three terminals. The correct voltage
should be seen across all combinations of
any two terminals.
10. TROUBLESHOOTING (cont.)
10.4 In Process Malfunction (cont.)
Symptom
9. Heating elements are
permanently activated.
10. Heating elements will not
heat the jacket, but the
display is on.
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