Tjernlund SS1 SideShot with UC1 Universal Control (Version X.02) 8504102 Rev 07/02 - Manual (Page 22)

Yes, LED #1 (Amber) is lit: Verify Prover safety circuit fault does not exist. See LED indicator light status & faults, on page 20.
If faults exist check Prover P1 & P2 safety circuit.
If no faults exist, check for 115 VAC across terminals N and MTR.
Voltage present: Replace SS1 motor part number 950-0625.
No voltage present: Replace UC1 circuit board part number 950-8801.
SYMPTOM 3: SS1 OPERATES, BUT BURNER DOES NOT
NOTE: Prover status check must be activated, see page 5. For any newly established call for heat the SS1 will run for 60 sec-
onds to try to close the fan prover circuit (P1 to P2). If circuit can not be made after 60 seconds LED's 4 & 5 (Red) will flash in uni-
son, indicating a prover check circuit fault on SS1 start up. The SS1 will shut down and LED's 4 & 5 (Red) will flash in unison, indi-
cating a prover check circuit fault on SS1 start up. NOTE: If primary control of oil burner locks out during the 1 minute period the
UC1 safety circuit and LED’s 4 & 5 will be reset. If the fan prover makes on start up, but breaks for more than 10 seconds during
the burner cycle, LED's 4 & 5 (Red) will flash in unison indicating a prover circuit fault. The SS1 will continue to run for 10 minutes
to try to make the prover circuit as long as a call for heat exists. After 10 minutes the SS1 will shut down and LED's 4 & 5 (Red)
will flash in unison indicating a prover circuit fault. Remove the call for heat and then reestablish to reset the UC1 prover safety
circuit (P1 to P2) & LED’s.
Verify that LED #2 (Green) is lit.
Yes, LED #2 (Green) is lit: Verify that "call jumper" is connected from J1 to J2 on UC1 circuit board. 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. NOTE: If using the “Dry Contact” interlock method, make sure that the
RED voltage selection jumper is installed on the dry contact tabs.
No, LED #2 (Green) is not lit: Remove call for heat and reestablish a call for heat to reset control. Within 1 minute of call for heat,
carefully jump a wire between P1 & P2 on UC1 control. LED #2 (Green) should light.
No, LED #2 (Green) does not light: Replace UC1 circuit board, part number 950-8801.
Yes, LED #2 (Green) lights up: Remove supply power to UC1. Remove Jumper from P1 & P2. The SS1 high limit is open, the fan
proving switch is not closing, or wiring connections are incorrect/broken. Disrupt call for heat. Push reset button on SS1 high limit
inside electrical box. NOTE: Insufficient post-purge may cause limit to trip. If the limit switch trips, verify that the post-purge setting
is long enough to remove residual heat from the combustion chamber. If high limit trips repeatedly, do not operate the heater until
the source of excessive heat has been determined and repaired. If high limit will not reset and has an open circuit, replace high
limit part number 950-0640.
Initiate call for heat. With SS1 running, verify that venter performance is sufficient to close fan prover. Draft gauge should read a
minimum of -0.05" w.c. at SS1 Prover sampling port.
No, measured draft is less than -0.05" w.c.: Verify that SS1 vent hood draft adjustment is at proper setting, see “Draft Adjustment
Procedure”, page 17. Visually inspect system for blockages. Confirm that maximum BTU/hr. input and vent pipe lengths are not
exceeded. See “Application Table” on page 1 for capacities. Check fan proving switch sensing tube for blockage.
Yes, measured draft is at least -0.05" w.c.: Replace fan proving switch part number 950-0650.
MAINTENANCE
SERVICE TECHNICIAN AND USER REQUIREMENTS
1. SS1 must be visually inspected annually.
2. On oil, verify over-fire draft, CO 2 and smoke readings are all correct. See “Draft Adjustment Procedure” on page 16.
3. Annually inspect vent pipe for evidence of corrosion. If any corrosion is found replace vent pipe and inspect venter.
4. The SideShot blower wheel must be inspected annually. Particulates, such as soot, oil impurities and sheet rock dust, can
prevent proper venting and will cause noise and vibration. Follow instructions, on page 22 for motor/wheel assembly removal.
5. Clean all particulate from wheel with a soft metal wire brush and soot cleaner. Clean the pocket of each blade, as well as the
rest of the wheel.
6. A wheel that exhibits large amounts of particulate or appears to be out of round should be replaced with a new wheel.
Instructions for wheel replacement are listed on page 22.
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