HTP ELP-199 - Manual (Page 72)

72
LP-294 REV. 2.20.14
E52 RETURN OPEN 73 Return sensor open Check the return sensor and connection.
E55 DHW OPEN 76 DHW sensor open Check the sensor and connection.
E59 SUPPLY SHORTED 80 Supply sensor shorted Check the supply sensor and connection.
E60 RETURN SHORTED 81 Return sensor shorted Check the return sensor and connection.
E63 DHW SHORTED 84 DHW sensor shorted Check the sensor and connection.
E65 FLUE SHORTED 86 Flue sensor shorted
Check the flue gas pipe. Check the
sensor and connection.
E66 RESET BUTTON 87 Reset button error Check the display and its connection.
E72 APPLIANCE SELECTION 93 Appliance selection error
Ensure the correct fan and burner are
installed in the boiler. Go to the installer
menu and select the correct appliance
type.
E38 GAS PRESSURE ERROR 107
Gas too low depending on BCU
settings
Check the gas pressure and external gas
valves. Check the external gas pressure
switch. Check menu setting.
E97 FLUE BLOCK ERROR 108 Flue gas pressure error
Check flue pressure switch, hose to flue
pressure switch (water), and wiring to
BCU
Table 43 – Blocking Error Codes
3. LAMBDACONSTANT LOCKOUT CODES
DISPLAY
CODE
ERROR
INT.
CODE
DESCRIPTION POSSIBLE SOLUTION
A02 Thermocouple error 8
Thermocouple
temperature failure Check the thermocouples and the connector. TC1 green-red
<10 ohm, TC2 yellow-white < 10 ohm. Exchange the burner.
A03 Combustion error 9
Wrong combustion
detected Check gas type selection in Menu, check thermocouples and
the connector. Check CO2 and 2 point calibration.
A07 Flue block error 10 Flue block detected
Check inlet of fresh air and flue gas piping for dirt and
condensate.
A30 C PSM error 37 Internal software error Reset. Exchange the BCU.
A82 Plausi T1_1 error 38 Fan Plausi error
Exchange the fan.
A83 Plausi T1_2 error 39 Fan Plausi error
A84 Plausi T2_1 error 40 Fan Plausi error
A85 Plausi T3 error 41 Fan Plausi error
A86 Plausi T2_1 error 42 Fan Plausi error
A87 Plausi T3_1 error 43 Fan Plausi error
A30 Register error 44 Internal software error Reset. Exchange the BCU.
Table 44 – LambdaConstant Lockout Codes
4. LAMBDACONSTANT BLOCKING CODES
DISPLAY
CODE
ERROR
INT.
CODE
DESCRIPTION POSSIBLE SOLUTION
E73 Fan error no massflow 94 Fan delivers no massflow to BCU
Check the connection between BCU and
fan. Exchange fan or BCU.
E74 Fan error Target MF too high 95 Target MF is too high for the fan Wrong fan type is mounted. Wrong
appliance type is selected.
E75 Fan error Target MF too low 96 Target MF is too low for the fan
E76 Fan error No comm. 97 No communication with fan
Check the connection between BCU and
fan. Exchange fan or BCU.
E77 Fan error No read Cal Table 98
Fan calibration table cannot be
read correctly from the fan by the
BCU Check the connection between BCU and
fan (loose contacts). Exchange fan or
BCU.
E78 Fan error MF calc 99 Mass flow calculation fails
Exchange the fan.
E79 Fan error others 100 Undefined fan errors
E80 Fan plausibility error 101 Plausibility check fails Check the connection between BCU and
fan. Exchange the fan.
E81 Fan comm. CRC fail 102 Fan communication CRC failure
E88 Mass flow comm. error 103 Mass flow sensor error Exchange the fan.
E89 Mass flow deviation error 104 Mass flow deviation error
Check inlet of fresh air. Clean flue gas
piping. Clean fan inlet. Measure CO
2
afterward. Ensure appliance type is set
properly.
Table 45 – LambdaConstant Blocking Codes