'emergency' operation on Daikin VRV

Good evening gents,

Been working on an old R22 'K' series VRV.

model: RSEY10KJW1.

Having problems with the inverter side of unit; inverter comp seized.
So, I've set the 'emergency' switch to on at the main pcb. Set all 7 fan coils to heat and ramped the temperatures up to 32.
Unfortunately the VRV does not want to run. No fault codes showing on R/C's.
I powered down the VRV prior to using the emergency switch.

As far as I know, this should be the only adjustment required to operate the VRV on standard comp.

Any other ideas?

regards,
Jase

Hi Jase,

That unit will only operate in emergency when all indoors are thermo on, are you 100% sure that all connected indoor units were:
1/ Switched on
2/ Set to heating mode
3/ Set point increased to ensure thermo on

If the unit still fails to operate, check calibration of the outdoor ambient thermistor (Th1).
-5 C = 85kOhms
0 C = 65kOhms
5 C = 51kOhms