29
Heat Controller, Inc.
VMH SerieS
Service Manual
PIC 2, Check the wiring.
PIC4: Main board LED when power on and unit standby.
PIC 5: check point bottom,
press 18 times to check how many indoor units are
connected.
Pic 1: Measure the voltage of L2 to S (Vs), is it
moving alternately between positive value and
negative value?
PIC 3: IPM (For dual/tri/quad-zone)
PFC (quad-zone only)
Содержание A-VMH18DC-1 Service
Страница 6: ...6 Service Manual VMH Series Heat Controller Inc 4 Wiring Diagram 4 1 A VMH18DC 1 4 2 A VMH27TC 1 ...
Страница 7: ...7 Heat Controller Inc VMH Series Service Manual 4 3 A VMH36QC 1 ...
Страница 47: ...47 Heat Controller Inc VMH Series Service Manual Appendix 4 ...
Страница 50: ...04 2009 10 2012 ...