NTI FTG 600 - Page 59

FTG │Installation & Operation Manual
59
Table 16-2 Troubleshooting Chart
PROBLEM
POSSIBLE CAUSE
CORRECTIVE ACTION
Burner not operating
Heat demand satisfied; no call for heat
Check Demand and Setpoints via Touchscreen.
Check thermostat and DHW aquastat settings (as
applicable).
Appliance outlet temperature exceeds
“Setpoint - On Hysteresis”
Check outlet temperature, setpoint and hysteresis
settings via Touchscreen.
Hold, Delay or Lockout
Check Summary page on Touchscreen for code.
Burner switch off
Check Summary page, if Demand indicates “Burner
switch off” go to diagnostics burner test page and
switch on.
Lockout 2 – Waiting for safety
data verification
Safety parameter(s) has been adjusted
Changing settings that are considered safety
parameters require “Safety data verification”. Refer
to Appendix A.
Lockout 9 – Flame bias out of
range
4-20mA input being overdriven.
If using 4-20mA input, check to ensure current is
not greater than 21mA.
Control malfunction
Cycle power, if problem returns replace control.
Hold 27 – Flame sensor shorted
to ground detected
A flame circuit shorted to ground may
show up as a flame circuit timeout.
Zero-Ohm shorts can display as Hold
27.
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.
Hold 61 – Anti short-cycle
Normal operation
Allow timer to expire, or reduce Anti short-cycle
setting as needed (See Appendix A)
Hold 62 – Fan speed not proved
Normal Operation (Drive to Lightoff)
Hold 62 is momentarily displayed prior to burner
ignition during the Drive to Lightoff.
Wiring defect
Inspect blower wiring, ensure connectors at Sola
controller and blower are securely attached.
- Faulty Sola controller
- Faulty Blower
If Hold 62 persists for 15 seconds or more, while
the blower is running, check "Fan speed" indicated
on display. If "LOW RPM", "HIGH RPM", “0” or
rapidly changing RPM value is displayed, try
connecting another Sola controller. If problem
remains, replace blower.
Hold 63 – LCI OFF (Limit
control input)
Incorrect Sola controller.
Replace control with correct model (Replacement
part number 85421)
Hold 65 – Interrupted Air
Switch OFF
Incorrect Sola controller.
Replace control with correct model (Replacement
part number 85421)
Hold 66 – Interrupted air switch
ON
Incorrect Sola controller.
Replace control with correct model (Replacement
part number 85421)
Hold / Lockout 67 – ILK OFF
LWCO Switch
Low Water Cutoff switch has opened – check for
proper water level and pressure; ensure the air is
adequately purged from the boiler system. Reset
the LWCO then clear lockout. If error continues,
clean LWCO probe or replace LWCO.
Bloc’d Condensate Switch
Blocked Condensate Switch has opened –
condensate is not draining from the boiler, or the
exhaust venting is too restrictive or has a blockage.
Check for blockages in the condensate trap and
drain; clean accordingly. If drain is not blocked,
check for blockages/restrictions in the exhaust
venting, then clear the lockout.