NTI Trinity TX Series Installation And Operation Manual page 69

Tx I&O Manual
Code Description
Flame present 10 seconds after closing gas valve – verify flame is going out immediately following the
Loc 27
end of a burner demand; check flame sensor (replace); check condensate drain for blockages; increase
post purge setting (Installer Menu setting 2-30).
Flame present before ignition – check flame sensor (replace); check condensate drain for blockages;
Loc 28
increase post purge setting (Installer Menu setting 2-30).
Controller Malfunction – contact NTI, check field wiring, replace controller.
Loc 29-30
Flame lost three times during one demand – see Loc 1.
Loc 31
Controller Malfunction – contact NTI, check field wiring, replace controller.
Loc 32 up
Controller Malfunction – contact NTI, check field wiring, replace controller.
Err 45-51
Incorrect Field Wiring – check electrical connections to field terminal strip; ensure the Thermostat is
Err 52
connected to terminals 7 and 8.
Controller Malfunction – contact NTI, check field wiring, replace controller.
Err 53
Flame detected out of sequence – check/replace flame sensor; check flame sensor wiring; check
Err 54
condensate drain for blockages; replace controller.
Water on control board – if the controller got wet, replace controller.
Controller Malfunction – contact NTI, check field wiring, replace controller.
Err 55-57
Water Pressure Error – increase system water pressure to a minimum of 12 PSI. If water pressure
Err 58-59
reading at the external pressure gauge exceeds 15 PSI, inspect water pressure sensor and cable; if water
pressure sensor is dirty, gently clean with a calcium/rust remover. If necessary, replace water pressure
sensor [see Figure 19-1(a), item 24].
Flue Sensor Error – flue temperature reading had exceeded 205⁰F; the combustion fan remains operating
Err 60
at minimum modulation rate until the error clears (when flue temperature drops below 153°F).
Occurrence of the error suggests that the combustion chamber needs cleaned or the heat exchanger
needs descaled. If the error persists after the flue has cooled, temporarily disconnect the electrical
connector from the flue sensor; if problem goes away replace flue sensor [see Figure 19-1(a), item 20];
if problem persists, replace the controller [see Figure 19-1(d), item 61].
Return Sensor Error – inlet temperature exceeded 203⁰F; error clears when inlet temperature drops below
Err 61
190⁰F: (1) ensure there is water flow through the boiler, (2) check for correct return sensor reading
(menu reading 1-09), (3) check wiring to return sensor; replace sensor [see Figure 19-1(a), item 24].
Controller Malfunction – contact NTI, check field wiring, replace controller.
Err 62-63
Faulty Grounding – check appliance grounding to breaker panel, check internal ground connections.
Err 64
Incorrect Polarity – controller has sensed reversed polarity of the 120VAC power supply; check field
Err 65
wiring to L2 NEUTRAL (terminals 12 &13) and L1 120VAC (terminal 14). There should be 120VAC
potential between L1 120VAC and ground, and 0VAC potential between L2 NEUTRAL and ground.
Incorrect Frequency – the controller accepts a line voltage frequency of 60Hz ± 2%; if outside this range
Err 66
the controller may be damaged or function incorrectly. If using a generator as a power source, install a
UPS (uninterruptible power supply) between the generator and boiler.
Faulty Earth Ground – check grounding of boiler and power supply; replace controller.
Err 67
Controller Malfunction – contact NTI, check field wiring, replace controller.
Err 68-71
Outlet Sensor Open – check wiring to Clip-on Outlet Sensor; replace sensor [see Figure 19-1(a), item 15].
Err 72
Outlet Sensor Fault – check wiring to Clip-on Outlet sensor; replace sensor [see Figure 19-1(a), item 15].
Err 73
Controller Malfunction – contact NTI, check field wiring, replace controller.
Err 74-77
Flue Sensor Open (or Flue Temperature too cold) – wiring to flue sensor broken/disconnection, flue
Err 78
sensor failure or boiler flue temperature is too low: (1) check wiring to flue sensor, (2) if boiler
temperature is really cold, remove flue sensor and warm it with you hand until the boiler fires and
warms-up, (3) replace sensor [see Figure 19-1(a), item 20].
Controller Malfunction – contact NTI, check field wiring, replace controller.
Err 79
Outlet Sensor Shorted – check wiring to Clip-on sensor; replace sensor [see Figure 19-1(a), item 15].
Err 80
Outlet Sensor Shorted – check wiring to Clip-on sensor; replace sensor [see Figure 19-1(a), item 15].
Err 81
Controller Malfunction – contact NTI, check field wiring, replace controller.
Err 82-85
Flue Sensor Shorted – see Err 60.
Err 86
│Display Menu Guide
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