HTP ELP-199 - Manual (Page 71)

71
LP-294 REV. 2.20.14
A13 State error 19 Internal software error
Exchange BCU. A14 Rom error 20 Internal software error
A14 Rom error C 21 Internal software error
A15 Air sw not open 22 Air pressure switch not working
Check air switch, hose to air switch
(water), and wiring to BCU. Check
Menu settings.
A16 15MS XRL error 23 3 timing errors Reset.
A17 Air sw not closed 24 Air pressure switch not working
Check air switch, hose to air switch
(water), and wiring to BCU. Check
Menu settings.
A18 Max Temp. Error 25
External overheat protection is
activated Check overheat sensor, wiring, supply
settings, and supply controller settings.
A19 Stack error 26 Internal software error Exchange BCU.
A20 Flame out too late 27
Flame still present 10 sec. after
closing the gas valve
Check position of ionization pin, clean
surface of ionization pin, Check the gas
valve tightness.
A21 False Flame 28 Flame is detected before ignition
Check the gas connection and gas
valve. Check position of ionization pin.
Reset. If error is not corrected,
exchange BCU.
A22 20MS XRL error 29 Internal software error
Reset the boiler.
A23 41MS XRL error 30 Internal software error
A24 Too many flame failures 31
Ten times flame loss during one
demand
Check the gas connection. Check
ionization wiring, pin, and position.
Check gas pressure.
A25 Flow switch not closed 32 Flow switch not working / No flow
Check the flow switch.
A26 Flow switch not open 33 Flow switch not working / No flow
A27 Flag byte integrity 34 Internal software error
Exchange BCU.
A28 AD Hi cpl. 35 Internal software error
A29 AD Lo cpl. 36 Internal software error
A30 Register error 37 Internal software error
A30 CPSM Error 37 Internal software error
Table 42 – Lockout Error Codes
2. BLOCKING ERROR CODES
DISPLAY
CODE
ERROR
INT.
CODE
DESCRIPTION POSSIBLE SOLUTION
E31 REFHI TOO LO 50
Internal hardware error
Check Field Connection Board on
shortcuts, otherwise exchange BCU. E32 REFHI TOO HI 51
E33 REFLO TOO LO 52
E34 REFLO TOO HI 53
E35 FALSE FLAME 54
Flame is detected in a state in which
no flame is allowed to be seen
Check the gas connection and gas valve.
Check position of ionization pin. Reset. If
error is not corrected, exchange BCU.
E36 WATER LEVEL DETECT 55 Low water level detected
Check the water pressure and sensor.
(N/A) E36 WATER LEVEL MEAS 56 Low water level measurement error
E36 LOW WATER CUTOFF 57 Low water sensor error
E37 LOW WATER PRESSURE 58 Low water pressure error
E38
WATER PRESSURE
SENSOR
59
Low water pressure depending on
BCU settings
Check the water pressure and sensor.
(N/A). Check menu setting.
E39 FLUE GAS ERROR 60 Flue gas temperature error
Check the flue switch or sensor. Check
wiring. Check heat exchanger.
E41 BLOCKED DRAIN 62 Blocked drain switch is active
Check and clean condensate trap and
condensate piping.
E43 WD FREQ ERROR 64
Not a correct frequency signal or no
communication with the WD Check the supply voltage and frequency.
Exchange BCU.
E44 PHASE ERROR 65 Hot neutral reversed Line not connected correctly.
E45 NET FREQ ERROR 66 Net frequency error detected.
Check the supply voltage and frequency.
Exchange BCU.
E46 FAULTY EARTH ERROR 67 Faulty earth connection
Check the earth connections of the boiler
and BCU.
E47 WD COMM ERROR 68 Watchdog communication error Exchange the BCU.
E51 SUPPLY OPEN 72 Supply sensor open Check the supply sensor and connection.