07-29-2025, 01:28 PM
#3 Roof Air: No Cool, Fan Runs
Checked capacitors & PTCR, inspected compressor electrical connections & ohm checked compressor. White Run wire on compressor had been overheated, cut it & replaced the end. Inside, removed ceiling cover & filter. Found +12VDC yellow compressor start wire disconnected and hanging loose. Connected it to the Y terminal of the 8330-426 control. No compressor start. Checked Y wire with A/C on and snowflake showing on Silverleaf display which indicates compressor ON & found zero volts.
Called Newell for location of Silverleaf TM-200 which is located above co-pilot side window. The decorative panel is held on with two screws underneath & has straps attached to the wall for it to hang from. Newell had me swap #3 cable on the TM-200 to #2 & using the #2 A/C controls it started #3 which verified the TM-200 as the failure.
There are Two TM-200’s, one for AC1, AC2 & AC3 and the other for AC4. The TM- 200 used for AC4 has unused plugs for two other two positions.
Called Silverleaf, was advised to take a photo of the DIP switches on each of the two TM-200’s and swap the TM-200’s along with changing the DIP switch positions on each. I did that which cured the problem, all 4 A/C units now work.
You may find a DIP switch covered with a yellowish covering. That is just plastic which can be peeled off, I used a fingernail.
Checked capacitors & PTCR, inspected compressor electrical connections & ohm checked compressor. White Run wire on compressor had been overheated, cut it & replaced the end. Inside, removed ceiling cover & filter. Found +12VDC yellow compressor start wire disconnected and hanging loose. Connected it to the Y terminal of the 8330-426 control. No compressor start. Checked Y wire with A/C on and snowflake showing on Silverleaf display which indicates compressor ON & found zero volts.
Called Newell for location of Silverleaf TM-200 which is located above co-pilot side window. The decorative panel is held on with two screws underneath & has straps attached to the wall for it to hang from. Newell had me swap #3 cable on the TM-200 to #2 & using the #2 A/C controls it started #3 which verified the TM-200 as the failure.
There are Two TM-200’s, one for AC1, AC2 & AC3 and the other for AC4. The TM- 200 used for AC4 has unused plugs for two other two positions.
Called Silverleaf, was advised to take a photo of the DIP switches on each of the two TM-200’s and swap the TM-200’s along with changing the DIP switch positions on each. I did that which cured the problem, all 4 A/C units now work.
You may find a DIP switch covered with a yellowish covering. That is just plastic which can be peeled off, I used a fingernail.
