NTI FTVN, Установка Запуск Обслуживание

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Part 13 - Troubleshooting
Table 34 - Boiler Error Codes
Important
Contact a qualified service technician for assistance if a Lockout Error occurs frequently. For safety reasons, the boiler will permit a maximum of five (5) resets in 15
minutes (five [5] presses of the RESET button). A sixth (6th) attempt within this 15 minute period will lock out the boiler permanently. The boiler will only operate
again after the electrical supply has been disconnected and reconnected.
Repeated Lockout Error conditions could indicate a serious error with the boiler or installation. Failure to contact a qualified service technician to troubleshoot
the error could result in substantial property damage, serious personal injury, or death.
*Error is resettable remotely via NTI Tele-Diagnostic Service, NTI Remote Contractor.
Air Intake / Exhaust Gas Outlet
6 02
Exhaust NTC detects Vent Tempera-
ture is greater than 204°F (96°C)
Press the Reset button to clear the error code.
If Error happens again:
1. Check exhaust temperature sensor. Ensure connections are secure.
2. Check sensor resistance. If resistance is zero, replace the sensor.
3. Check flue gas temperature. Compare it to the reading on parameter 834. If the parameter 834 rea-
ding is significantly higher, replace the flue sensor.
4. Check exhaust vent for blockage.
5. If the problem persists, check the combustion chamber and clean, if necessary. Also, descale the
heat exchanger.
6. If the problem persists, replace the control.
7. If the problem persists, replace the heat exchanger.
Blocking
(Manual
Reset)
6 03 APS Open
Press the Reset button to clear the error code.
1. Check APS and main controller connections. Ensure all are secure.
2. Check APS resistance. If resistance is not zero, replace the switch.
3. Check APS hose. Ensure it is connected and in good condition.
4. Check condensate line and termination for blockages.
5. Check exhaust vent for blockages.
6. If the problem persists, replace the main control.
6 05
Exhaust NTC circuit open or short
circuit
This Error Code will go away when the condition is remedied.
1. Check exhaust temperature sensor. Ensure connections are dry and secure.
2. If flue is very cold, < 14°F (-10°C), remove sensor and warm it, then reinstall.
3. If flue is very hot – see error 6 02.
4. Check exhaust vent for blockages.
Blocking
(Auto
Reset)
6 12*
Insufficient fan speed
(<500 for 3 seconds or RPM min -300
for 3 minutes)
Press the Reset button to clear the error code.
If Error happens again:
1. Check the connections to the fan. Ensure all are secure.
2. If the fan does not rotate during the ignition sequence, check for 8Vac 26.5VDC power at the fan
connection.
If 8Vac 26.5VDC power is present at the control, replace the fan. If the blower does not have 8Vac
26.5VDC power, check power at the control. If 8Vac 26.5VDC power is not present at the control,
replace the control.
3. If the problem persists, replace the main control.
Blocking
(Manual
Reset)
NOAVL
PCB Error
1. Check parameter 046. If it is set to UNDEF, it must be changed according to the boiler’s application.
For example:
• b--SIN - Sets the boiler as a single boiler (default setting).
• b--MAS - Sets the master boiler of a cascade system.
• b--FL1
- Sets follower #1 of a cascade system.
• b--FL2 - Sets follower #2 of a cascade system.
• b--FL3
- Sets follower #3 of a cascade system.
• b--FL4 - Sets follower #4 of a cascade system.
• b--FL5 - Sets follower #5 of a cascade system.
• b--FL6
- Sets follower #6 of a cascade system.
• b--FL7 - Sets follower #7 of a cascade system.
2. If the problem persists, check the eBus2 wires. Ensure they are not shorted together.
3. If the problem persists, replace the main control.
After the
issue is
corrected
the error
will clear.
EMERG
Incorrect wiring to BUS connection
(When in Emergency mode, the
boiler operates in CH mode with a
target boiler temperature of 113°F)
1. The control has sensed a short circuit on the BUS connection – disconnect field wiring from BUS
connection.
2. If connecting an NTI room sensor or zone controller to the BUS connection, check for correct
polarity and short circuits of the wiring.
3. If boiler is part of a cascade, check for proper daisy-chain wiring between the BUS connection of
each boiler.
NOTE:
It is possible to adjust the Emergency Setpoint via parameter 2.10.3.
Display Description Possible Remedies
Error
Type