Bradford White RE2H50R10B-1NCWT, Руководство пользователя и инструкции по установке

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22
Fault codes.
* Some Models
fault
Code
dis-
played
fault
Counts
Before
Code
dis-
played
Condition Check
F8 10
T5 sensor (ambient temperature) failure. The control detects
the thermistor output is at or nearly shorted or open circuit.
Check T5 sensor mounting, wiring and resistance.
Use service mode to monitor T5 sensor temperature.
Control assembly may have failed.
F9 10
Lower heating element failure. Control energizes lower
element, but current sensor detects no current flow.
Check lower heating element and wiring.
Use service mode to cycle element and check current
draw. Control assembly may have failed.
F10 10
Upper heating element failure. Control energizes Upper
element, but current sensor detects no current flow.
Check Upper heating element and wiring.
Use service mode to cycle element and check current
draw. Control assembly may have failed.
F11 1
Dry Tank fault. This test is run within the first 22 minutes
after the unit has powered on. (The compressor is engaged
for 20 minutes after a 2minute wait for the system to allow
the high and low side pressures to equalize.) The tank
temperature, T2, is read and verified it has not risen more
than 5 deg F. If it has, this indicates there is not enough
water in the tank for water heater operation. After 1 failed
Dry Tank test, “F11” is displayed. After 5 failed tests, an
audible alarm will sound.
Check to ensure the tank is full of water.
Check T2 sensor mounting, wiring and resistance.
Use service mode to monitor T2 sensor temperature.
Control assembly may have failed.
bAd linE
(F12)
1
The voltage is too low at power-up. The control monitors the
input line voltage1 minute after power-up, and if the voltage
is below 155V, the fault code will be displayed.
Check electrical supply line connections. Voltage should
measure either 208 VAC or 240 VAC, depending upon
power supply. Badline counts stored in “F12” and can be
monitored via the Control when placed in diagnostics
mode.
F13 1
Stuck Key fault. This indicates there is a button on the front
panel that is stuck down. This button is inoperable. Other
buttons work normally. If the button becomes free, the fault
code will clear by itself.
Check to see if all buttons are operable.
Control assembly has failed
Dirty
Filter
(F14)
5
Filter LED is on, and audible alarm is sounding. Filter is too
dirty to enable proper function of unit. Number of “Dirty
Filter” counts are stored in the “F14” code and can be
monitored via the Control when it is placed in Diagnostics
Mode. The evaporator is operating at a colder temperature
than the ambient temperature as measured by T5.
Check to ensure Filter is clean. Filter cleaning instructions
are found in the owner’s manual.
Repeated dirty filter alarms that do not resolve by cleaning
the filter may be an indication of a fan failure.
F15 10
DataFlash fault. The microcontroller has detected a
problem in the DataFlash (permanent memory storage).
Control assembly may have failed.
F18 10
Current transformer miswired. F3, F9, and F10 fault codes
have alloccured during the same heating cycle.
Check that red L2 wire is through the CT201 current
transformer on the board. If it is, board needs to be re -
placed
F19 10 Low Line Voltage. Check incoming line voltage .
F20 10
Condensate drain pan port blocked. Water heater will only
operate in standard/electric mode until the drain port is
cleared and the sensor is no longer in contact with water .
Check main drain on condensate drain pan. Unblock if
necessary. Check that the sensor is in the correct position
in the drain pan, on the screw post near the main drain
port.
F21 1
Application Update Failure. A problem occurred while
updating the control application.
Cycle power and try to complete the update again.
If problems persist, replace the control board.
F22 1
Parametric Data Update Failure. A problem occurred while
updating parametric data.
Cycle power and try to complete the update again.
If problems persist, replace the control board.
F23 10
Micro A/D Failure. The control has detected a
microcontroller input port has failed.
The control needs to be replaced.