F6-00" - Abnormal High Pressure In Cooling - Daikin EDLQO5CAV3 Service Manual

ESIE15-08B | Part 2. Troubleshooting
Faulty compressor.
Faulty expansion valve.
Faulty 4-way valve.
Faulty outdoor main PCB.
2.24. "F6-00" – Abnormal high pressure in cooling
Trigger
The temperature measured by the heat
exchanger thermistor rises above 60°C.
Possible cause
Installation space is not large enough.
Faulty fan motor.
Faulty expansion valve.
Faulty outdoor inverter PCB.
Faulty outdoor main PCB.
Faulty stop valve.
Dirty heat exchanger.
Faulty heat exchanger thermistor R2T.
Refrigerant contaminated
Page 30
Daikin Altherma Monobloc CA
Check compressor (see page 91).
Check compressor connection and wiring.
Check expansion valve operation (liquid
back issue).
Check refrigerant charge (see page 106)
+ check for leaks.
Check expansion valve (see page 90 or
page 108).
Check 4-way valve (see page 92).
Check if the alive led is blinking in regular
intervals.
Check if the correct spare part is installed.
Check if the outdoor main PCB receives
power.
Effect
Unit will stop operating
Check
Check if the installation space is conform
with regulations. Refer to Installer Refer-
ence Guide.
Check fan motor (see page 103)
Check fan motor connection and wiring.
Check expansion valve (see page 97).
Check outdoor inverter PCB (see
page 101).
Check if the alive led is blinking in regular
intervals.
Check if the correct spare part is installed.
Check if the alive led is blinking in regular
intervals.
Check if the correct spare part is installed.
Check if the outdoor main PCB receives
power.
Check stop valves.
Check heat exchanger
Check heat exchanger thermistor R2T
(see page 88).
Check quality of the refrigerant
2. Error code based troubleshooting
Replace the compressor when required.
(see page 125).
Investigate the reason of breakdown.
Replace expansion valve when required
(see page 131).
Fix the possible leak.
Replace expansion valve when required.
Replace 4-way valve when required (see
page 127).
Adjust the power to the outdoor main
PCB.
Replace outdoor main PCB when alive led
is not blinking in regular intervals (see
page 119).
Reset
Auto reset when heat exchanger thermis-
tor drops below 50°C
Corrective action
Adjust installation space when required.
Replace fan motor when required (see
page 116). Adjust wiring when required.
Replace expansion valve when required.
Adjust the power to the outdoor inverter
PCB.
Replace outdoor inverter PCB when
required (see page 122).
Adjust the power to the outdoor main
PCB.
Replace outdoor main PCB when alive led
is not blinking in regular intervals (see
page 119).
Replace stop valves when required.
Clean heat exchanger when required.
Replace heat exchanger thermistor when
required (see page 124).
Replace refrigerant when required.
Make sure your refrigerant system is dry
and clean before charging!
19/07/16