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