Page 52
SECTION VII: TROUBLESHOOTING
Table 10 shows a list of blocking error codes. A blocking code will be visible on the control
display in the form of a code (letter “E” followed by a number) and a short message. Blocking
errors automatically reset once the error is corrected.
Table 10: Blocking Error Codes
Description:
Internal software error.
Causes & Actions:
Contact a qualified agency to inspect the control.
Description:
Internal hardware error.
Causes & Actions:
Contact a qualified agency to inspect the control.
Description:
A flame is detected when no flame is allowed.
Causes & Actions:
The control and/or gas valve is not working properly - contact a qualified agency.
Description:
The blocked vent circuit is open.
Intake or exhaust vent is blocked - inspect and clean.
Faulty or loose wiring to switches - check blue and yellow wires.
Excessive wind or room draft is creating high pressures.
Description:
The gas supply pressure is too high, or too low.
Low supply pressure or undersized piping - see manual.
Gas supply is turned off.
Pressure drop due to other appliances on the same supply line.
Faulty or loose wiring to switch - check black/yellow wires.
Description:
The exhaust gas temperature has exceeded the high limit.
Causes & Actions:
Exhaust pipe is blocked - inspect and clean.
Description:
The water level in the tank is low.
Causes & Actions:
Open LWCO circuit. Purge air from tank, check electrical connections.
Description:
Various WD communication errors.
Causes & Actions:
Contact a qualified agency to inspect the control.
Description:
The polarity at the main power supply is reversed.
Causes & Actions:
The hot and neutral wires are reversed - Contact a qualified agency to inspect the installation.
Description:
A faulty earth ground connection is detected.
Causes & Actions:
Improper wiring - check all green wires.
Description:
The water temperature sensor is open.
Causes & Actions:
Faulty or loose wiring - check sensor, wires, and connections.
Description:
The water temperature sensor is shorted.
Causes & Actions:
Short in circuit - check sensor, wires, and connections.
Description
The exhaust gas sensor is shorted.
Causes & Actions:
Short in circuit - check sensor, wires, and connections.
Description
An error has occurred with the reset button
Causes & Actions:
Contact a qualified agency to inspect the control display.
Description
an error has occurred due to incorrect appliance selection.
Causes & Actions:
Contact a qualified agency to inspect the controls.
Description
A communication error has occurred with the fan.
Causes & Actions:
Contact a qualified agency to inspect the control.
E72
APPLIANCE SEL ERROR
E76, E77,
E79, OR
E81
various fan errors
E43, E47
various WD Errors
E44
PHASE ERROR
E66
RESET BUTTON ERROR
E34-E38
WD INTERNAL ERROR
E31 - E34
REF HI/LO TOO HI/LO
E35
FALSE FLAME
E65
FLUE SENSOR SHORT
E46
EARTH GROUND ERROR
E51 or E52
WATER T SENSOR OPEN
E59 or E60
WATER T SENSOR SHORT
E38
GAS PRESSURE
Causes & Actions:
E39
FLUE GAS LIMIT
E41
LOW WATER CUTOFF ERROR
BLOCKING ERRORS (automatic reset once error is cleared)
E36
BLOCKED VENT
Causes & Actions:
Содержание OT600-A
Страница 35: ...SECTION IV INSTALLATION Page 35 Figure 26 Piping Diagram One Unit Figure 27 Piping Diagram Two Units ...
Страница 40: ...Page 40 SECTION IV INSTALLATION Figure 32 Component Wiring Diagram ...
Страница 41: ...Page 41 Figure 33 Schematic Wiring Diagram SECTION IV INSTALLATION ...
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