Weil-McLain Aqua Balance WMB-155 Manual page 106

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AquaBalance
34 Troubleshooting
Figure 134 Troubleshooting suggestions for
Some informations can be accessed with a communication package running on the PC.
Category
Description Num. Address
Boiler 1
Boiler 2
Boiler 3
Boiler 4
Boiler 5
Boiler 6
Boiler 7
Boiler 8
Boiler 9
Boiler 10
Boiler 11
Boiler 12
Boiler 13
Boiler 14
Boiler 15
Boiler 16
Boiler 17
OpenTherm 18
OpenTherm 19
OpenTherm 20
• D1....the boiler is / has finished the call for Domestic Water heating, and is in the transition to either standby mode or
central heating mode.
• D2....the boiler has reached the required water set point, and the firing has stopped / with a call for Central Heating still
applied by the T-Stat to the boiler. Pumps will continue to operate and the boiler is monitoring the two internal water
sensors (return & discharge) waiting for a water "Delta-T" to return...at that time the boiler will re-fire if need be.
• D3....the boiler has made 3 tries for ignition and has failed to ignite. A re-trial ignition cycle / delay is in effect for 3 more
tries to ignite.
Parameter Description
D1 After cycle of Domestic water mode, D1 will be displayed.
D2
When required boiler water set - point is reached D2 will be displayed.
D3 After an attempt for ignition, re-trial ignition delay is in effect (D3 is displayed).
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106
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ALL OUNT GAS FIRED WATER BOILER
(continued)
AquaBalance
Description
CL4 – A532 CH supply sensor1 temperature
CL4 – A567 CH supply sensor2 temperature
CL4 – A55B CH return sensor temperature
CL4 -A53D DHW sensor temperature
CL4 -A568 Exhaust sensor temperature
CL4 -1110 Water pressure sensor
CL4 -A554 Outside temperature sensor
CL4 -0FAB MSB Control water set point
CL4 -FC02 MSB CH Virtual set point
CL4 -FC02 LSB DHW Virtual set point
CL4 – 11DC MSB Fan speed -Setpoint
CL4 – 11DC LSB Fan speed -Feedback
CL4 – 0364 Flame current
CL4 – FAFB MSB PWM modulating pump
CL4 – FAFB LSB Step of Triac modulating pump
CL4 – 0F0E '+: ÀRZ VHQVRU
ML -F68B DHW over-temp_burnerOFF-initially_Temperature
CL4 – FAF4 MSB OT room setpoint
CL4 – FAF4 LSB OT room setpoint
CL4 – FAC8 MSB OT room temp
—
Boiler Manual
™
boilers — Fault displays and diagnostics
E2 prom parameters
(continued)
Unit
ƒ) 
ƒ) 
ƒ) 
ƒ) 
ƒ) 
3VL 
ƒ) 
°F
°F
°F
Hz
Hz
X$ 
%
Num
Hz
°F
°F Int
°F Dec
°F Int
Part number 550-100-305/0118