'emergency' operation on Daikin VRV

[Jase]

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

[VRVIII]

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