Power Soak SI-100 Owner's Manual - Manual (Page 28)

27
Component Operation and Checks
Heat Controller
The Heat Controller can be checked as follows:
1. Make sure the heat controller is wired as indicated above. Turn heater on/off
selector switch to "on".
2. If the heat controller is displaying any of the above error messages, take the
recommended action. If there is no display, go to step 4. If the heat controller is
displaying the actual and set temperature, go to step 7. If the display is jumbled or
incoherent, go to step 3.
3. Program the heat controller. See programming on page 28. If the heat controller
cannot be programmed or programming does not correct the display, replace the
heat controller.
4. Check voltage across terminal 10 on the heat controller and X2 on the transformer,
and terminal 11 on the heat controller and X2 on the transformer. It should be 20-
28v. If voltage is 20-28v, go to step 5. If not, check the breaker, fuses, transformer,
switch, liquid level control and wiring. Make the necessary repair.
5. Check voltage across terminal 12 on the heat controller and X1 on the transformer.
It should be 20-28v. If voltage is 20-28v, go to step 6. If not, check the breaker,
fuses, transformer and wiring. Make the necessary repair.
6. If the voltage checks ok in step 4 and 5 and the display is not lit, the heat controller
is defective. If the display is lit go to step 2.
7. Adjust the set temperature to 120 degrees as indicated above. If the set temperature
will not adjust, go to step 3.
8. Make sure actual temperature is less than 115 degrees. Check voltage across
terminal 8 on the heat controller and X2 on the transformer. It should be 20-28v. If
no voltage, the heat controller is defective. Note: The red indicator light should
also be on. If voltage is 20-28v, go to step 9.
9. Adjust the set temperature to 114 degrees as indicated above.
10. Make sure the actual temperature is greater than 116 degrees.
11. There should be no voltage across terminal 8 on the heat controller and X2 on the
transformer. If there is 20-28v, the heat controller is defective. Note: The red
indicator light should be off.