NTI Trinity Tft285 - Page 70

Trinity │Installation and Operation Instructions Tft Series
70
Table 16-1 Troubleshooting Chart
PROBLEM
POSSIBLE CAUSE
CORRECTIVE ACTION
pump
Faulty Sola controller
If Fuse “B” not blown, and Sola controller is
operating, navigate to pump diagnostic on display.
Manually switch pump on, check for 120VAC at
pump connection terminal on line voltage barrier
strip. If 120VAC not detected, replace Sola
controller.
Inoperative CH and/or DHW
pump
Faulty pump
If 120VAC supplied to pump, and pump does not
operate, replace pump.
Blower operating at high
speed while burner is off
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 Sola controller.
No 24VAC to Sola controller
 Check Power LED on Sola controller.
 Check Fuse "C".
 With an AC voltmeter measure voltage at
terminals J8 1 & 2, 24VAC should be present.
Blower not operating
Blower power disconnected
Verify that the 3-position Molex connector on the
wiring harness is securely connected to its mating
connector on the blower.
Blown fuse
Check Fuse "A" using the procedure described
above. Fuse "A" protects the blower as well as the
ignition spark generator and appliance pump.
Faulty blower
Measure voltage across pins 1 & 2 (black and
white wires) of 3-position connector on wiring
harness. If 120VAC detected, reconnect then 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
113 (45)
4,369
-
-
Table 16-3 Hold and Lockout Codes
Code
Description
Note
0
None
Hold / No lockout
1
Unconfigured safety data
Lockout