Crown Boiler BWF Series, Supplement Manual

Page: 10 / 24

8
  
1 sec.
1 sec.
1 sec.
FIGURE 10b.3: TYPICAL OPERATING MODE DISPLAY (BOILER TEMP SHOWN)
TABLE 10b.2: STATUS CODES
Status # Description Meaning
1
Standby
No call for heat or DHW
OR
Call for heat present , but boiler is in thermal purge (See
PP
on page 10)
OR
Call for heat/DHW present but boiler temperature is above high limit (
HL
) setting.
2
Waiting for Pressure
Switch to open
Control is confirming that air pressure switch contacts are open before starting fan.
3
Waiting for Pressure
Switch to close
Fan is on and control is waiting for air pressure switch contacts to close.
4 Prepurge Pressure switch is closed and control is waiting 30s before starting trial for ignition.
6 Spark Control is attempting to light pilot
7 Flame proving Control is verifying that the pilot flame is on and stable.
8 Running Main burner is on
10 Retry/Recycle Delay
Control was unable to establish pilot and is waiting 60 seconds before trying again
OR
Proof of pilot was lost after pilot was established and control is waiting 60 seconds
before attempting to relight.
11
Pressure Switch failed to
open.
Control waited in Status #2 for 60 seconds and air pressure switch remained closed.
Boiler will remain in this state until the air pressure switch opens.
12
Pressure Switch failed to
close.
Control waited in Status #3 for 60 seconds and air pressure switch failed to close.
Boiler will remain in this state until the air pressure switch closes.
13 Soft Lockout
A fault is preventing the boiler from firing. Boiler will be allowed to fire after problem
clears itself AND a forced delay period has passed.
14 Hard Lockout
A fault has occurred which requires manual intervention before the boiler will again
operate. This intervention can be in the form of interruption of the power supply to
the boiler or resetting the control in Adjustment mode.
15 Waiting for limit to close
LWCO open (if LWCO kit PN 761000 installed), limit jumper plug missing, or flame
rollout switch open (BWF series only)
16
Flame Present out of
Sequence
A flame was detected when none should have been present.
17 Self test Boiler was just energized and control is running a self check.
NOTE
in operating mode, holding either the
↑ or ↓
button while viewing a given parameter will keep the display on
the actual reading. for example, pressing
↑
while reading boiler temperature as shown in figure 10b.3 will
keep the display on 180 for as long as the button is held. this makes it easier to view readings “live” if they are
changing rapidly