#1 5/89
#2 5/90
#3 7/90
#4 9/90
#5 12/90

Checking out a capacitor and how it's used to start a motor
Using 30 K ohm sensors with an IE C-30 controller
Using 3 K ohm sensors with an IE C-30 controller and checking out the output circuit of an IE C-100
Harold Spagatinie and Close E-Nuf Plumbing troubleshooting problem
Harold Spagatinie and Close E-Nuf Plumbing troubleshooting solution and IE C-30 and DTT-XX series problems you can fix yourself

#6 3/91
#7 6/91

#8 7/91
#9 4/92
#10 6/93

Another Harold Spagatinie and Close E-Nuf Plumbing troubleshooting problem
Harold Spagatinie and Close E-Nuf Plumbing troubleshooting solution and conversions for using a Heliotrope Quadra-Temp with 30 K ohm sensors
Review of a Florida Solar Energy Center School Survey
Bailey Platte Canyon High School Swimming Pool Project
Troubleshooting an air system - Solve the problem

#11 8/93
#12 1/94
#14 3/95

#15 2/96

Air system problem solution and a liquid flow rate problem and its solution
A liquid space heating control system problem and its solution
Programmable Differential Temperature Controllers #1, Dencor, Dynatech, HI Square/Hawthorne and Honeywell
Programmable Differential Temperature Controllers #2, IE C-30, CM-30, CM-33, and CM-50

#16-1 3/96
#16-2 3/96
#17 5/96

#18 6/96
#19 8/96

#20 11/96

Programmable Differential Temperature Controllers #3, IE C-35, C-100, and C-l20, Part 1
Programmable Differential Temperature Controllers #3, IE C-35, C-100, and C-l20, Part 2 Programmable Differential Temperature Controllers #4, Heliotrope DTT-XX and DTT-XXX series controllers
Programmable Differential Temperature Controllers #5, IE DM-30 and DLX-30 monitors
Programmable Differential Temperature Controllers #6, Heliotrope DTT-74/794 and DTT-84/94 controllers
Programmable Differential Temperature Controllers #7, IE SP-30, -32, -33, and -34 set-point controllers

#21 2/97

#22 4/97

#23 6/97
#24 7-8/97

#25 9-10/97

Programmable Differential Temperature Controllers #8, Novan 2011 and DLP-20 controllers
Sensors I, Review of SERI/TR-253-2185 report and two Tech Tips involving Quick-Check users and use of TV tuner cleaner
Sensors II, Completion of the review of SERI/TR-253-2185 report
Programmable Differential Temperature Controllers #9, Apollo 44, Apollo 88, Webb 990 and Webb Systemizer III controllers.
Programmable Differential Temperature Controllers #10, Solar Controls Corp. 80-171 (for DHW systems) and 77-176 (for air space heating), the Rho Sigma/Watsco RS121, the Solaron HC0115, and the TACO line of controllers.

#26 7-8/98
#27 4-6/99
#28 7-9/99
#29 1/07