Ts Series Installation and Operation Instructions │Trinity Ts
57
Table 16-1 Troubleshooting Chart
PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION
External Electrical Noise Look for sources of electrical noise, i.e. a large
motor starting, multiple pieces of equipment
starting at the same time.
Failing Limit Switch in ILK circuit Check operation of internal water pressure switch,
and/or external LWCO or safety flow switch;
replace as necessary
Lockout 174
Hardware failure of controller If problem persists, replace Sola boiler control
(pn: 83589)
Alert 981 Loss of communication between
display and controller.
Check 3-conductor cable between display and
controller – verify proper wiring with wiring
schematic. Replace display, replace controller.
Normal Operation Pump output A will only have power during a
DHW demand. Pump output B will have power
during any demand. Pump output C will only
have power during a Thermostat demand when a
DHW demand is not present.
Faulty pump If 120VAC supplied to pump, and pump does not
operate – replace pump.
Inoperative CH and/or DHW
pump
Faulty controller If 120VAC is not supplied to the pump given
conditions described under “Normal Operation”
above – replace controller.
Blower signal cable disconnected
• Verify that the 5-position Molex connector on
the wiring harness is securely connected to its
mating connector on the blower.
• Check that the 4-position Molex connector on
wiring harness is securely connected to its
mating connector on the controller.
Blower operating at high
speed while burner off
No 24VAC to controller
• Check Power LED on controller.
• Check 24VAC Transformer Fuse.
• With an AC voltmeter measure voltage at
terminals J8 1 & 2, 24VAC should be present.
Blower power disconnected Verify that the 3-position Molex connector on the
wiring harness is securely connected to its mating
connector on the blower.
Blower not operating
Faulty blower Measure voltage across pins 1 & 2 (black and
white wires) of 3-position connector on wiring
harness. If 120VAC detected, replace power
connector and remove 5-position signal connector.
Blower should rotate at high speed. If blower does
not rotate, replace blower.
Table 16-2 Thermistor Resistance vs. Temperature
Temp °F (°C) Resistance Ohms (Ω) Temp °F (°C) Resistance Ohms (Ω)
-22 (-30) 176,133 122 (50) 3,603
-4 (-20) 96,761 131 (55) 2,986
14 (-10) 55,218 140 (60) 2,488
32 (0) 32,650 149 (65) 2,083
41 (5) 25,390 158 (70) 1,752
50 (10) 19,900 167 (75) 1,481
59 (15) 15,710 176 (80) 1,258
68 (20) 12,490 185 (85) 1,072
77 (25) 10,000 194 (90) 918
86 (30) 8,057 203 (95) 789
95 (35) 6,531 212 (100) 680
104 (40) 5,327 230 (110) 506
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