Maintenance and service
RTG 199 HE – 6 720 811 617 (2016/01)
41
7.7
Control board diagnostics
1. Press ON/OFF button
into ON.
2. Immediately following, press and hold simultaneously buttons
or
and
for 3 seconds, until display reads P2.
3. Press
to enter P2 adjustment. The current setting will appear on
the display. If not, repeat process.
4. Press and release the
button on the control panel until the
display reads 'P4'. You are now in the diagnostic mode of the control
board.
5. When the display reads 'P4', press and release the
button once
again and the display should read 'E'.
6. Use the
and
button on the control board to cycle through
different diagnostic modes available.
7. Once in the selected diagnostic mode of your choice, press and
release the
button to display the diagnostic information.
EXAMPLE: to read the flow rate in gallons per minute while the unit is
flowing water, cycle to the '3d' mode and press the
button. A
reading of 25 on the display would indicate the heater is reading a flow
rate of 2.5 gallons/minute.
8. Once the information is obtained, press the
button again to
return to the diagnostic mode menu and scroll to addition diagnostic
information.
9. Press ON/OFF button to turn OFF the appliance and back ON again to
return heater to normal function.
Program
Description
Factory Default
MIN
MAX
Comment
P0
By-pass calibration
-
-
-
Contact manufacturer for details.
P1
Maximum Power
NG: 51,
LP: 52
21
NG: 53,
LP: 53
see chapter 4.15, page 33
note: reducing P1 values below maximum will
reduce maximum power of the appliance.
P2
Minimum Power
NG: 10,
LP: 13
NG: 8,
LP: 11
20
see chapter 4.3.8, page 21
P3
Remote
Controls installed
_0
_0
6
Not available
P4
Access to
Diagnostic Mode
E
0d
10f
see chapter 7.7, page 41
P5
Cascade Mode
NO
NO
CC
Contact manufacturer for details.
P6
Temperature Unit
°F
°F
°C
P7
Gas type selection
LP or NG
Preset from factory.
Contact manufacturer for details.
P8
Back light
dE
dE
On
dE turns back light off after 60 seconds from
last button pushed, ON turns backlight on
permanently.
P9
Fan Purge
Runs secondary fan and primary fan when P9
is selected by depressing the “P” - button
PH
Cascading type
IC
IC
SC
This menu is only available when cascade
mode is selected CC.
Contact manufacturer for details.
PC
Primary/Secondary
mode
CS
CS
Cn
Table 44 Program values, factory default settings and ranges.
+
P
P
P
+
+
P
P
P
Diagnostic menu
E
Entry/Exit into sub-modes
0d
Heat exchanger water temperature
1d
Inlet water temperature (°F)
2d
Outlet water temperature (°F)
3d
Water flow (gallons/min)
4d
Bypass control monitor (°F) [0d - 2d]
5d
Fan speed (Hz)
6d
Burner power (%)
7d
Maximum power (kW)
8d
Back flow temperature (°C)
9d
Exhaust temperature (°C)
1F
Most recent error/failure
2F
2nd most recent error
3F
3rd most recent error
4F
4th most recent error
5F
5th most recent error
6F
6th most recent error
7F
7th most recent error
8F
8th most recent error
9F
9th most recent error
Table 45 * Settings define from factory
