EN-29
<Troubleshooting by inferior phenomena>
No.
Fault symptom
Possible cause
Explanation - Solution
1 Remote controller
display is blank.
1.
There is no power supply to remote controller. 1. Check LED2 on FTC2BR.
(i) When LED2 is lit.
Check for damage or contact failure of the remote controller wiring.
(ii) When LED2 is blinking.
Refer to No. 5 below.
(iii) When LED2 is not lit.
Refer to No. 4 below.
2.
Power is supplied to remote controller,
however, the display on the remote controller
does not appear.
2.
Check the following:
• Disconnection between the remote controller cable and the FTC2BR control board
• Failure of the remote controller if “Please Wait” is not displayed
• Refer to No. 2 below if “Please Wait” is displayed.
2 “Please Wait” remains
displayed on the remote
controller.
1.
"Please Wait" is displayed for up to 6 minutes. 1.
Normal operation
2.
Communication failure between the remote
controller and FTC2BR
2, 3.
Go to “Remote controller check” pressing BACK button for 5 seconds (Refer to page 27).
If “OK” is displayed, conduct the procedures below.
• Check the wiring connections on the outdoor unit control board and the
FTC2BR control board.
(Ensure S1 and S2 are not cross-wired and S3 is securely wired with no damage.
• Replace the outdoor unit and/or the FTC2BR control board.
If the messages other than “OK” is displayed, see “Remote controller check” on page 27.
3.
Communication failure between FTC2BR and
outdoor unit
3 The main screen
appears with a press
of the “ON” button, but
disappears in a second.
The remote controller operations do not work for a
whilst after the settings are changed in the service
menu. This is because the system takes time to
apply the changes.
Normal operation
The indoor unit is applying updated settings made in the service menu. Normal
operation will start shortly.
4
LED2 on FTC2BR is off. When LED1 on FTC2BR is also off.
<FTC2BR powered via outdoor unit.>
1.
The outdoor unit is not supplied at the rated
voltage.
1. Check the voltage across the terminals L and N or L3 and N on the outdoor power board.
• When the voltage is not 220 to 240V AC, check wiring of the outdoor unit and of the breaker.
• When the voltage is at 220 to 240V AC, go to “2.” below.
2.
Defective outdoor controller circuit board
2. Check the voltage across the outdoor unit terminals S1 and S2.
• When the voltage is not 220 to 240V AC, check the fuse on the outdoor control
board and check for faulty wiring.
• When the voltage is 220 to 240V AC, go to “3.” below.
3.
FTC2BR is not supplied with 220 to 240V AC. 3. Check the voltage across the indoor unit terminals S1 and S2.
• When the voltage is not 220 to 240V AC, check FTC2BR - outdoor unit wiring for faults.
• When the voltage is 220 to 240V AC, go to “4.” below.
4.
FTC2BR failure
4. Check the FTC2BR control board.
• Check the fuse on FTC2BR control board.
• Check for faulty wiring.
• If no problem found with the wiring, the FTC2BR control board is faulty.
<FTC2BR powered on independent source>
1.
FTC2BR is not supplied with 220V to 240V AC.
1. Check the voltage across the L and N terminals on the indoor power supply
terminal block.
• When the voltage is not 220 to 240V AC, check for faulty wiring to power supply.
• When the voltage is 220 to 240V AC, go to 2. below.
2.
FTC2BR failure
2. Check the FTC2BR control board.
• Check the fuse on FTC2BR control board.
• Check for faulty wiring.
• If no problem found with the wiring, the FTC2BR control is faulty.
When LED1 on FTC2BR is lit.
Incorrect setting of refrigerant address for outdoor unit
(None of the refrigerant address is set to “0”.)
Recheck the refrigerant address setting on the outdoor unit.
Set the refrigerant address to “0”.
(Set refrigerant address using Dip switch on outdoor controller circuit board.)
5 LED2 on FTC2BR is
blinking.
When LED1 is also blinking on FTC2BR.
Faulty wiring between FTC2BR and outdoor unit
Check for faulty wiring between FTC2BR and outdoor unit.
When LED1 on FTC2BR is lit.
1.
Faulty wiring in remote controller
Multiple indoor units have been wired to a
single outdoor unit.
1. Check for faulty wiring in remote controller.
The number of indoor units that can be wired to a single outdoor unit is one. Ad-
ditional indoor units must be wired individually to a single outdoor unit.
2.
Short-circuited wiring in remote controller
2.,3. Remove remote controller wires and check LED2 on FTC2BR.
• If LED2 is blinking, check for short circuits in the remote controller wiring .
• If LED2 is lit, wire the remote controller again and:
- if LED2 is blinking, the remote controller is faulty;
- if LED2 is lit, faulty wiring of the remote controller has been corrected.
3.
Remote controller failure
6 No water at hot tap.
1.
Cold main off.
1. Check and open stop cock.
2.
Strainer blocked.
2. Isolate water supply and clean strainer.
7 Cold water at tap.
1.
Hot water run out.
1. Ensure DHW mode is operating and wait for DHW tank to re-heat.
2.
Heat pump not working.
2. Check heat pump – consult outdoor unit service manual.
3.
Booster heater cut-out tripped.
3. Check booster heater thermostat and press reset button if safe.
If the heater has been operated with no water inside it may have failed, so
please replace it with a new one.
4.
The earth leakage circuit breaker for booster
heater breaker (ECB1) tripped.
4. Check the cause and reset if safe.
5.
Immersion heater cut-out tripped.
5. Check immersion heater thermostat and press reset button, located on immer-
sion heater boss, if safe. If the heater has been operated with no water inside it
may have failed, so please replace it with a new one.
6.
Immersion heater breaker (ECB2) tripped.
6. Check the cause and reset if safe.
7.
3-way valve fault
7. Check plumbing/wiring to 3-way valve.
8. Troubleshooting
en
Summary of Contents for PAC-IF033B-E
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