1. Nbung katsi ai lam rawt wa ai raitim, masat da ai shara de n du ai:
1) Thermostat hpe yu na. Ndai hta, thermostat a n-gun dat pru ai lam, pru wa ai n-gun shadawn shadang masat masa (thermostat gaw ndai magam bungli hpe lu ai rai yang), thermostat a nbung katsi ai lam hpe hka wa na masa, thermostat a grai n-gun n-gun hpe masat da ai lam hte masat masa galaw ai lam, PD parameters ( factory settings hpe yu u) ni lawm ai.
2) Hka lum ai jak ni hte katsi ai hpe hkang ai circuitry ni hpe jep yu u. Oven nkau mi gaw, nbung laru law law hpe lang ma ai. Hpung shagu gaw kaja ai hku bungli galaw nga ai hpe jep yu u. clamp-on ammeter hpe lang nna, nbung katsi ai hpung langai hte langai a daw mi hpe shadawn na, shing nrai, heater ni hpe daw kau nna, shanhte a ninghkap ai lam hpe shadawn yu u.
2. Nbung katsi ai lam n rawt wa ai (sh) hka lum ai jak n pru ai:
1) Thermostat a status indicators hte settings ni hpe jep yu u.
2) Hka lum ai jak ni hte hkang zing ai circuitry ni hpe jep yu u, AC matut mahkai ai wa atsawm sha hkap la ai kun, nbung katsi ai circuit breaker hpaw ai kun, lapran na relay gaw hkrak hkrak bungli galaw nga ai kun ngu ai hpe mung jep yu u.