NTI Trinity Tft399 Installation And Operation Manual page 66

│Installation and Operation Instructions
Trinity
Summary and Diagnostics Display – The Trinity Tft controller and Touch-screen display provides detailed
operational and diagnostic information for aid in troubleshooting. When power is applied to the appliance the
initial page displayed is the Summary page. Information presented on the Summary page includes Demand
source, Burner state, status of sensors and pumps, and so forth. Any current Alert or Lockout condition is also
displayed. Accessible from the Summary page are the Configuration, Diagnostics, Details and History pages.
Refer to Appendix A - Controller and Touchscreen Display Instructions for more information.
Lockout and Alert History – The controller maintains a record of the fifteen (15) most recent events for both
Lockouts and Alerts. To display the logs, touch the History button on the Summary page (refer to Appendix
A - Controller and Touchscreen Display Instructions). In any situation where a malfunction is suspected,
always check the Alerts and Lockouts history. Entries recorded in the history provide useful information for
determining the cause of the malfunction.
Table 16-1 Troubleshooting Chart
PROBLEM
Display shows "System
Disconnected!" constantly
Burner not operating
Lockout 2 – Waiting for
safety data verification
Lockout 9 – Flame bias out of
range
Hold 27 – Flame sensor
shorted to ground detected
Hold 61 – Anti short-cycle
Hold 62 – Fan speed not
proved
Hold 63 – LCI OFF (Limit
control input)
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POSSIBLE CAUSE
Communication wire disconnected
Faulty Sola controller
Heat demand satisfied; no call for
heat
Appliance outlet temperature
exceeds "Setpoint - On Hysteresis"
Hold, Delay or Lockout
Burner switch off
Safety parameter(s) has been
adjusted
4-20mA input being overdriven.
Control malfunction
A flame circuit shorted to ground
may show up as a flame circuit
timeout. Zero-Ohm shorts can
display as Hold 27.
Normal operation
Normal Operation (Drive to
Lightoff)
Blown fuse
Wiring defect
- Faulty Sola controller
- Faulty Blower
Incorrect Sola controller.
CORRECTIVE ACTION
See, "System Disconnected!" above.
If 24VAC present at Sola controller terminals J8 1
& 2, check Power LED on Sola controller. Verify
that connector J8 is securely plugged into the Sola
controller. Recycle power to appliance, if Sola
controller does not operate, replace the Sola
controller.
Check Demand and Setpoints via Touchscreen.
Check thermostat and DHW aquastat settings (as
applicable).
Check outlet temperature, setpoint and hysteresis
settings via Touchscreen.
Check Summary page on Touchscreen for code.
Check Summary page, if Demand indicates
"Burner switch off" go to diagnostics burner test
page and switch on.
Changing settings that are considered safety
parameters require "Safety data verification".
Refer to Appendix A.
If using 4-20mA input, check to ensure current is
not greater than 21mA.
Cycle power, if problem returns replace control.
Check to ensure condensate drain is not blocked.
Check to ensure no external voltage is applied to
R & CH terminals. If using 4-20mA input, check
to ensure current is not greater than 21mA.
Allow timer to expire, or reduce Anti short-cycle
setting as needed (See Appendix A)
Hold 62 is momentarily displayed prior to burner
ignition during the Drive to Lightoff.
" "
Check Fuse A , blown fuse prevents blower
from operating.
Inspect blower wiring, ensure connectors at Sola
controller and blower are securely attached.
If Hold 62 persists for 15 seconds or more, while
the blower is running, check
"
indicated on display. If LOW RPM
", "0"
RPM or rapidly changing RPM value is
displayed, try connecting another Sola controller.
If problem remains, replace blower.
Replace control with correct model (Replacement
part number 77777)
Tft Series
" "
Fan speed
" "
, HIGH