AM Series Boiler & Water Heater User Manual
CHAPTER 9
– OPERATION
OMM-0100_E
•
GF-146
•
11/15/2019
Technical Support
•
(800) 526-0288
•
Mon-Fri, 8 am - 5 pm EST Page 120 of 170
Blocking Error Messages
ERR#
DESCRIPTION
CHECKS
SOLUTIONS
Err 59
Low water pressure
error
(This error will stop all
modules)
Check the pressure entering the
water system and gradually
increase it.
a)
If water system pressure is over what is set in
parameter 3022, replace the water pressure
sensor.
b)
If filling the system for the first time, turn
parameter 2011 to
ON
to open the internal valve
and allow air to purge.
Err 60
High
fl
ue gas
temperature error
a)
Check the combustion
efficiency
of the burner in fail. Combustion
Efficiency
must be higher than
92%.
b)
Check the
fl
ue gas temperature
sensor for the graph in indicated
in Section 10.24.
\
a)
If return temperature is higher than 145°F (62°C)
downrate the capacity or reduce the water flow;
b)
If combustion efficiency is lower than
88%
, try to
clean the flue gas side and the water side of the
heat exchanger;
c)
If
fl
ue temperature sensor does not match
Section 10.24, replace it.
Err 61
Return temperature is
higher than 176
°
F
(80
°
C)
a)
Check the return temperature
sensor for values indicated in
graph in Section 10.24.
b)
Check if supply and return pipe
are reversed
If return temperature sensor does not match
Section 10.24, replace it.
Err 62
Blocked drain switch is
active
(This error will stop all
modules)
a)
Check if the condensate drain is
blocked
b)
Check if the condensate tank is
blocked.
a)
Remove any obstruction from the condensate
drain.
b)
Check the condensate tank; if medium is
exhausted, it must be replaced.
Err 64
No correct Frequency
signal, or no correct
ground connection, or
no communication
with the WD.
a)
Check frequency signal is
between 55 and 65Hz.
b)
Check the ground connection
(between ground and neutral it
must be 0 volts).
a)
If out of range, consult your electrical supplier.
b)
If the ground connection is not correct, ask your
electrical supplier to investigate. Alternately,
replace the power control board.
Err 65
Hot neutral reversed
Check supply voltage polarity.
Reverse supply voltage polarity if needed.
Err 66
Net freq. error
detected in the main
Check the frequency signal. It must
be between 55 and 65Hz.
If out of range, consult your electrical supplier.
Alternately, replace the power control board.
Err 67
Faulty earth
connection
Check the earth connection to the
appliance.
Reconnect the earth connection.
Err 68
Watchdog
communication error
Check the connections to the
appliance.
Reconnect the power control board.
Err 72
Supply sensor open
Check the connections to the
appliance.
If temperature sensor does not comply with section
10.24, replace.
Err 73
Return sensor open
Err 76
DHW sensor open
Err 80
Supply sensor shorted
Err 81
Return sensor shorted
Err 84
DHW sensor shorted
Err 86
Flue sensor shorted
