Glow T180
Tankless Condensing Water Heater
57
Description Resolution
A24 Blocked flue switch is open
* Follow instruction given in flowchart: A24 Block flue switch
open
A29 Internal software error
* Recycle power and press RESET
* If lockout code still exists, replace ICB and display board
A30 Internal software error
* Recycle power and press RESET
* If lockout code still exists, replace ICB and display board
Press RESET to restore unit to normal operating mode
Description Resolution
E114 Flame is detected and not present
* Power OFF the unit and clean ionization electrode
* Recycle power and press
* Allow the burner to operate at high fire for 1 minute if E114 still
appears replace the ICB
* Recycle power and press RESET
DCW inlet sensor failure * Follow instruction in flowchart: E119 DCW inlet sensor failure
E120 Heat exchanger outlet sensor failure
* Follow instruction in flowchart: E120 heat exchange outlet
sensor failure
DHW outlet sensor failure * Follow instruction in flowchart: E122 DHW outlet sensor failure
Flue sensor failure * Follow instruction in flowchart: E123 flue sensor failure
E126 DCW sensor shorted
* If E126 BLOCKING ERROR still exists, replace DCW inlet
E127 Heat exchanger outlet sensor shorted
* If E127 BLOCKING ERRORstill exists, replace heat exchanger
E129 DHW sensor shorted
* If E129 BLOCKING ERROR still exists, replace DHW outlet
E130 Flue sensor shorted
* Recycle the power
* If E130 BLOCKING ERROR still exists, replace flue sensor
E134 Too many RESETs in a short time period
* Power OFF unit, wait 5 minutes, Power ON unit
* If E134
BLOCKING ERROR still exists, replace ICB and display
board
E135 Incorrect polarity
* Power OFF the unit
* Check and reverse the polarity at the receptacle
Internal software error
* Recycle power and press
* If BLOCKING ERROR still exists, replace ICB and display
board
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