Section V - Boiler Control Display - Prestige Solo 175 User's Information Manual

Boiler Control Display
BOILER CONTROL DISPLAY
StbY
Standby Mode
After the boiler is turned on, the control panel will display
STANDBY mode as shown in the figure above.
This is the standard mode for the PRESTIGE. The con-
trol automatically returns to this mode after 20 minutes if
no keys have been pressed on the display.
The first character shows (on left side of display) the cur-
rent status of the boiler depending on the condition of
both the boiler and the burner. The last 3 characters indi-
cate the current boiler supply temperature.
If the burner is blocked due to a "soft" lockout, the dis-
play alternates between a 9 followed by the boiler outlet
temperature and a "b" with a two digit error code.
Display Boiler function
0
180
STANDBY, no demand for heat
1 180
Fan prepurge (10 seconds) or post purge cycle
180
2
Ignition sequence
3 180
Burner ON for space heating (CH)
4 180
Burner ON for domestic water heating (DHW)
5 180
Pre-check for air flow prior to prepurge cycle
Burner OFF due to reaching supply
6 180
temperature set point
Post pump cycle for primary space heating
7
180
(1 minute)
Post pump cycle for domestic hot water
180
8
(30 seconds)
9 180
Burner blocked:
Supply temperature too high (203 F) .Burner will
b 18
remain OFF until outlet temperature drops
below 200 F
Return temperature too high (203 F). Burner
b 19
will remain OFF until temperature drops
below 200 F
Return temperature is measured higher than
b 24
supply temperature. Burner will remain OFF
until corrected.
Supply temperature increased too quickly.
b
25
Burner will remain OFF for a 10 minute period.
Burner will recycle, increasing waiting period 1
minute for a max. 15 minutes
Factory supplied LWCO pressure device or
b 26
external limit (terminals 15 & 16) is OPEN.
Burner off for 150 seconds, auto reset.
b
2 8
No blower signal
Blower signal present, Burner will remain OFF
b
29
until condition terminates
Temperature rise between the supply and return
b 30
is more than 72 F. Burner will remain OFF for 150
seconds. Burner will recycle increasing wating
period 1 minute each cycle for a max. 20 cycles.
Short circuit measured across flue temperature
b
35
sensor terminals. Burner OFF until corrected.
Open circuit measured across the flue
b 40
temperature sensor.
Flue temperature greater than 241 F less than
b 52
250 F. Burner off for 150 seconds
b 65
Wait for the blower to start
8