Bradford-White Corp BNTH Manual De Usuario

Page 51

49

Maximum cycle count

Control operates correctly,

was reached

however the cycle count will
not increment any higher
than 999,999 cycles

Replace controller or adjust the count using blue display

50

Maximum hours count

Control operates correctly,

was reached

however the hours count will
not increment any higher
than 999,999 hours

248

CH outdoor temperature
was invalid

251

CH ODR max outdoor temp-

Confirm outdoor reset

erature setpoint was invalid

settings. An invalid

252

CH ODR min outdoor temp-

adjustment has been

erature setpoint was invalid

made

253

CH ODR min water temp-
erature setpoint was invalid

254

CH ODR temperature range

Increase Outdoor air temp-

Adjust setting to within appropriate range

was too small

erature min and max values

(min. 12°C / 22°F)

to a difference greater than
22°F (12°C)

255

CH setpoint minus ODR

Increase Outdoor water

min water temperature was

temperature min and max

too small (min. 12°C / 22°F)

values to a difference greater

Increase setpoint or

than 22°F (12°C)

decrease min water temp.

565

Heat exchanger T-rise limit

Heat exchanger temperature

Check for correct water flow

was exceeded

rise exceed

Boiler will not stay lit

Indicates lack of flame signal, Check flame detector wiring; clean / replace flame
check fault code on display

detector

Boiler bangs, knocks, hisses

Insufficient water flow /

Check for proper flow, follow piping guidelines in

pump failure; improper piping

manual; replace pump; improper glycol percentage

(see Section 4.3)

Flame pulsates, venting

Insufficient / improper

Ensure venting complies with 

Section 2

noise or has difficulty lighting

venting; dirty burner; air in
gas line; dirty heat exchanger

980

Display error

Communication error

Check wiring and connectors. Possible software

between the control

revision incompatibility.

and display.

981

Display error

Communication error

Check wiring and connectors. Possible software

between the control

revision incompatibility.

and display.