Bradford White RE2H50R10B-1NCWT, Owner'S Manual & Installation Instructions

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21
Fault codes.
* Some Models
fault
Code
dis-
played
fault
Counts
Before
Code
dis-
played
Condition Check
FC 10
Control checks to ensure evaporator is free of frost.
Continuously verifies that T3a sensor (evaporator inlet tem -
perature) is greater than 20F after 30 minutes of run time.
Check T3a sensor mounting, wiring and resistance.
Check Electronic Expansion Valve (EEV) operation.
Check sealed system for refrigerant leak.
Fd 10
Control checks to ensure evaporator superheat* is OK
(controlled by EEV). Continuously verifies the temperature
difference between T3a sensor (evap inlet temp) and T3b
sensor (evap outlet temp) is greater than 5F after 30 mins of
run time. Control also verifies that T3a is greater than 10F
less than T5 ambient sensor.
Check that filter is clean. Check T3a, T3b and T5 sensor
mounting, wiring and resistance.
Check Electronic Expansion Valve (EEV) operation.
Check sealed system for refrigerant leak.
FE 10
Control checks to ensure the compressor discharge
temperature never exceeds 240F. Continuously verifies that
T4 sensor (compressor outlet temperature) is less than 240F
every minute of run time.
Check T4 sensor mounting, wiring and resistance.
Check Electronic Expansion Valve (EEV) operation.
Check sealed system for refrigerant leak.
FF 10
Control checks to ensure the EEV is operating properly and
valve rotation is within range.
Check Electronic Expansion Valve (EEV) operation.
Check T3a and T3b sensors mounting, wiring and
resistance. Check sealed system for refrigerant leak.
FG 10
Control checks to ensure Ambient temperature is within an
acceptable range before starting heat pump. Heat pump
operating range is 35ºF < [T5 ambient] <120ºF. If ambient
temperature (as viewed by T5 sensor) is outside of this range,
the unit will switch to Electric/Standard Mode for that
heating cycle only. NO fault code is shown on the display.
No failure is assumed, but this information is provided for
completeness.
F I * 10
Control checks to ensure evaporator superheat is <20ºF
AND the EEV position is <450 after 30 minutes of run time. If
outside these limits, this provides an early indication of a re -
frigerant leak. (Note: Target superheat is generally 10ºF, and
EEV generally operates at a position much lower than 450.)
Check sealed system for refrigerant leak.
Check T3a, T3b, T5 sensor mounting, wiring and resistance.
Check Electronic Expansion Valve (EEV) operation.
FJ 10
Control checks to ensure that the AC current draw is
<= 20.5A while the compressor and lower heating element
are both enabled. If current draw is >20.5A, the compressor
will be disabled.
Check lower heating element rated wattage. Element
wattage is stamped on the heating element terminal block.
Correct wattage can be found on the water heater’s rating
plate.
FL 10
Control checks to ensure that T3a and T3b evaporator inlet
and outlet temperatures are within 2.5ºF of the T5 ambient
temperature 20 minutes after defrost begins.
Check T3a, T3b, T5 sensor mounting, wiring and resistance.
Check Electronic Expansion Valve (EEV) operation.
F2 1
T2 tank temperature sensor failure Just before compressor
starts, control checks T2 sensor is within 30F - 170F
temperature range.
Check T2 sensor mounting, wiring and resistance.
Use service mode to monitor T2 sensor temperature.
Control assembly may have failed.
F3 10
Compressor failure. Control energizes compressor, but
current sensor detects no current flow.
Check compressor run capacitor.
Check compressor, overloads, relay and wiring.
Use service mode to manually cycle compressor on/off.
F4 10 Fan Failure Check fan and wiring.
F5 10
T3a sensor (evap inlet temperature) failure. The control
detects the thermistor output is at or nearly shorted or open
circuit.
Check T3a sensor mounting, wiring and resistance.
Use service mode to monitor T3a sensor temperature.
Control assembly may have failed.
F6 10
T3b sensor (evap outlet temperature) failure. The control
detects the thermistor output is at or nearly shorted or open
circuit.
Check T3b sensor mounting, wiring and resistance.
Use service mode to monitor T3b sensor temperature.
Control assembly may have failed.
F7 10
T4 sensor (compressor outlet) failure. The control detects the
thermistor output is at or nearly shorted or open circuit.
Check T4 sensor mounting, wiring and resistance.
Use service mode to monitor T4 sensor temperature.
Control assembly may have failed.