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E5
Overheating occurred
1.
Overheating occurred. Possible
causes include operating at a very
high load for a long period and then
there is a sudden event such as
excessively low pressure in water
supply or excessively high gas supply
pressure.
2.
The temperature controller or the
high temperature fusible protection
wire has separated.
1. Normal system function. This should
be a very infrequent event. Correct
gas or water supply issues if there
are frequent reoccurrence.
2. Replace the fusible protection wire.
E6
Solenoid valve error.
1.
The wiring is loose or a bad
connection occurred.
2.
The solenoid valve is faulty.
3.
Controller has failed.
1.
Mount plug-in wiring properly and
replace bad elements.
2.
Replace solenoid valve.
3.
Repair or replace the controller.
E8
Exhaust system error.
1.
Wiring harness or wiring connection
somewhere in air pressure switch
connection has come loose.
2.
Exhaust(air intake) ducts is jammed.
3.
The pressure vent is jammed.
4.
The pressure switch is damaged.
5.
Too many elbows or too long vent
pipes caused
excessive exhausting
resistance.
1.
Plug the plug-in element in place, or
replace the bad element.
2.
Replace and/or clean Exhaust(air
intake) ducts.
3.
Replace and/or clean the vent.
4.
Replace the pressure switch.
5.
Choose proper location for terminal
installation, and follow the
instruction about Max Vent length to
choose right number of elbows and
length of total vent pipes.
Содержание AHG-T42-LP
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