Tjernlund HS3,4,5 Series with UC1 Universal Control (Version X.06) 8504111 Rev C 07/05 - Manual (Page 18)

SYMPTOM 3: VENTER OPERATES, BUT BURNER DOES NOT
For any newly established call for heat the UC1 will run for 60 seconds to try to close the fan prover circuit (P1 to P2). If circuit can
not be made within 60 seconds, LED #4 (Red) will flash 3 times, indicating a prover check circuit fault on UC1 start up. NOTE: The
UC1 safety circuit and LED #4 (Red) will be reset if the call for heat interlock signal or 115 VAC power is removed. If the fan prover
makes on start up, but breaks for more than 10 seconds during the burner cycle, LED #4 will flash continuously indicating a prover cir-
cuit fault. The Venter will continue to run for 10 minutes to try to make the prover circuit as long as a call for heat exists. If Prover
does not make within 10 minutes, the UC1 will shut down and LED #4 (Red) will flash 4 times indicating a prover circuit fault. Remove
the call for heat and then reestablish to reset the UC1 prover safety circuit (P1 to P2) & LED #4 (Red).
Verify that LED #2 (Blue) is lit.
Yes, LED #2 (Blue) is lit: Verify that "call jumper" is connected from J1 to J2 on UC1 circuit board if using typical wiring where supply
voltage from terminal 1 is routed to terminal 3 through “call jumper” then to 4 when appliance interlock relay makes. With call for
heat established, verify that wiring is correct by measuring voltage between terminals 1 & 2 and 2 & 4 of UC1 terminal strip. Voltage
should be the same in both cases, if not rewire per appropriate diagram or confirm burner control(s) are functioning properly.
NOTE: If a different voltage source is provided to terminal 3 which is switched to terminal 4 or when using the A-B dry contacts, volt-
age measurements may not apply. For millivolt installations make sure system Limits are reset and relight pilot.
No, LED #2 (Blue) is not lit: Remove power from UC1 and push dip switch #9 up or “on” to deactivate Pre-Cycle Fan Prover status
check. Remove P1 and P2 prover leads off of Fan Prover switch and jumper together. Reestablish power and call for heat. After
Venter pre-purge, if set (up to 35 seconds), LED #2 (Blue) should light.
No, LED #2 (Blue) does not light: Replace UC1 circuit board, part number 950-8804.
Yes, LED #2 (Blue) lights up: The fan proving switch may not be closing, wiring connections are incorrect/broken or burner control(s)
are not functioning properly. With Venter running, verify that Venter performance is sufficient to close Fan Prover contacts by check-
ing for continuity across switch. IMPORTANT: After continuity check push dip switch #9 back down to “activate” Pre-Cycle Fan
Prover status check. Replace Fan Prover leads from P1 and P2 back on Fan Proving switch.
No, continuity is not present: Confirm that burner is not firing at capacities or temperatures exceeding Venter limits. Check for exces-
sive vent pipe runs, elbows directly on venter discharge, high winds, plugged / kinked Fan Prover sensing tube or a faulty Fan Prover
switch. IMPORTANT: Do not connect 5 foot section of aluminum tubing directly to Venter housing. Sensing tube assembly provided
with factory calibrated length must be used or Fan Prover will not work properly. If everything checks out okay, replace fan prover.
Yes, continuity present: Recheck wiring and burner control(s).
LIMITED PARTS WARRANTY AND CLAIM PROCEDURE
Tjernlund Products, Inc. warrants the components of the Venter and UC1 for 1 year from date of installation. This warranty covers
defects in material and workmanship. This warranty does not cover normal maintenance, transportation or installation charges for
replacement parts or any other service calls or repairs. This warranty DOES NOT cover the complete Venter if it is operative, except
for the defective part.
1.) Follow troubleshooting guide to determine defective component. If unable to determine faulty component, contact your installer,
contractor, distributor or Tjernlund Products Technical Service Department at 1-800-255-4208 for troubleshooting assistance.
2.) After the faulty component is determined, return it to your Tjernlund distributor for replacement. Please include Venter date
code component was taken from. The date code is located on the Venter motor mount. If the date code is older than 1
year, you will need to provide a copy of the original installation receipt to your distributor. Credit or replacement will only be
issued to a Tjernlund distributor after the part has been returned prepaid to Tjernlund and verified defective.
WHAT IS NOT COVERED
Product installed contrary to our installation instructions, altered, neglected or misused
Product that has been wired incorrectly
Product that has been damaged by a malfunctioning or mistuned burner
Any freight charges related to the return of the defective part
Any labor charges related to evaluating and replacing the defective part
15
TJERNLUND LIMITED ONE YEAR WARRANTY
Tjernlund Products, Inc. warrants to the original purchaser of this product that the product will be free from defects due to faulty material or workmanship for a period of (1) year from the date of origi-
nal purchase or delivery to the original purchaser, whichever is earlier. Remedies under this warranty are limited to repairing or replacing, at our option, any product which shall, within the above stat-
ed warranty period, be returned to Tjernlund Products, Inc. at the address listed below, postage prepaid. THERE ARE NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION ON THE
FACE HEREOF, AND TJERNLUND PRODUCTS, INC. EXPRESSLY DISCLAIMS LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OF THIS PRODUCT.
THIS WARRANTY IS IN LIEU OF ALL OTHER EXPRESS WARRANTIES AND NO AGENT IS AUTHORIZED TO ASSUME FOR US ANY LIABILITY ADDITIONAL TO THOSE SET FORTH IN THIS
LIMITED WARRANTY. IMPLIED WARRANTIES ARE LIMITED TO THE STATED DURATION OF THIS LIMITED WARRANTY. Some states do not allow limitation on how long an implied warranty
lasts, so that limitation may not apply to you. In addition, some states do not allow the exclusion or limitation of incidental or consequential damages, so that above limitation or exclusion may not apply
to you. This warranty gives you specific legal rights and you may also have other rights which may vary from State to State. Send all inquiries regarding warranty work to Tjernlund Products, Inc. 1601
9th Street, White Bear Lake, MN 55110-6794. Phone (651) 426-2993 • (800) 255-4208 • Fax (651) 426-9547 • Email: [email protected]
MODEL HS3
MOTOR KIT
950-1022
WHEEL KIT 950-1013
FAN PROVER KIT 950-1032
HOUSING 950-1014
UC1 CIRCUIT BOARD 950-8804
MODEL HS4
MOTOR KIT*
950-0131
SHAFT EXTENSION 950-0010
WHEEL KIT 950-1013
FAN PROVER KIT 950-1007
HOUSING 950-1008
UC1 CIRCUIT BOARD 950-8804
*May need shaft extension kit if old
shaft extension can not be removed.
MODEL HS5
MOTOR KIT
950-1017
WHEEL KIT 950-1015
FAN PROVER KIT 950-1007
HOUSING 950-1018
UC1 CIRCUIT BOARD 950-8804