Watts Aerco TAG-0072 GF-146-E Operation & Maintenance Manual page 120

AM Series Boiler & Water Heater User Manual
CHAPTER 9 – OPERATION
ERR# DESCRIPTION
Low water pressure
error
Err 59
(This error will stop all
modules)
High flue gas
Err 60
temperature error
Return temperature is
higher than 176 °F
Err 61
(80°C)
Blocked drain switch is
active
Err 62
(This error will stop all
modules)
No correct Frequency
signal, or no correct
ground connection, or
Err 64
no communication
with the WD.
Hot neutral reversed
Err 65
Net freq. error
Err 66
detected in the main
Faulty earth
Err 67
connection
Watchdog
Err 68
communication error
Supply sensor open
Err 72
Return sensor open
Err 73
DHW sensor open
Err 76
Supply sensor shorted
Err 80
Return sensor shorted
Err 81
DHW sensor shorted
Err 84
Flue sensor shorted
Err 86
OMM-0100_E • GF-146 • 11/15/2019
Blocking Error Messages
CHECKS
Check the pressure entering the
water system and gradually
increase it.
Check the combustion efficiency
a)
of the burner in fail. Combustion
Efficiency must be higher than
92%.
Check the flue gas temperature
b)
sensor for the graph in indicated
in Section 10.24.\
Check the return temperature
a)
sensor for values indicated in
graph in Section 10.24.
Check if supply and return pipe
b)
are reversed
Check if the condensate drain is
a )
blocked
Check if the condensate tank is
b )
blocked.
Check frequency signal is
a)
between 55 and 65Hz.
Check the ground connection
b)
(between ground and neutral it
must be 0 volts).
Check supply voltage polarity.
Check the frequency signal. It must
be between 55 and 65Hz.
Check the earth connection to the
appliance.
Check the connections to the
appliance.
Check the connections to the
appliance.
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
SOLUTIONS
If water system pressure is over what is set in
a)
parameter 3022, replace the water pressure
sensor.
If filling the system for the first time, turn
b)
parameter 2011 to ON to open the internal valve
and allow air to purge.
If return temperature is higher than 145°F (62°C)
a)
downrate the capacity or reduce the water flow;
If combustion efficiency is lower than 88%, try to
b)
clean the flue gas side and the water side of the
heat exchanger;
If flue temperature sensor does not match
c)
Section 10.24, replace it.
If return temperature sensor does not match
Section 10.24, replace it.
Remove any obstruction from the condensate
a)
drain.
Check the condensate tank; if medium is
b)
exhausted, it must be replaced.
If out of range, consult your electrical supplier.
a)
If the ground connection is not correct, ask your
b)
electrical supplier to investigate. Alternately,
replace the power control board.
Reverse supply voltage polarity if needed.
If out of range, consult your electrical supplier.
Alternately, replace the power control board.
Reconnect the earth connection.
Reconnect the power control board.
If temperature sensor does not comply with section
10.24, replace.
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