Solar pump ek season chala — phir controller beep, screen par "dry run", pani nahi — haalanki kal bore mein pani tha. Ya ulta: band hi nahi hota jab tak motor garam mehsoos ho. Dono case mein gatekeeper: dry run protection, float switch / level sensor, wiring.
Ye guide dry run kaise kaam karta hai, ghar par safe check, wiring galti, PM-KUSUM dealer warranty — har fault DIY nahi, ye clear rakhte hue.
High voltage DC / mains controller bina training mat kholo. Pani level, float hilaana, error code khud; terminal kaam dealer/electrician se.
Controller kya karta hai
- Panel → drive (VFD/controller) → submersible motor
- Dry run sensor — float, electrode, ya software current se
- Naye kit mein GSM bhi ho sakta hai
Drive motor frequency sun ke match karta hai. Pani na ho to float contact ya amp pattern — trip — motor bach jaye.
PM-KUSUM Component B BIS pump — protection bypass = subsidy warranty risk.
Pani hai phir bhi dry run — top reasons
| Kaaran | Nishaan | Fix |
|---|---|---|
| Float atka | Hil nahi raha | Saaf, position, replace |
| Pani level neeche | Sensor upar | Sensor neeche / bore gehra (long term) |
| Foot valve band | Subah start par trip | Service, desilt |
| Air lock | Hichkichahat | Prime, leak check |
| Galat setting | Kam dhoop par trip | Manual parameter — dealer |
| Loose wire | Kabhi-kabhi | Junction tight |
| Electrode kharab | Jang | Replace |
Weighted line se pani confirm — andaza nahi.
Float vs electrode vs software dry run
Float (farm par common)
- Tank/well mein ball float
- Pros: Sasta, simple
- Cons: Keechad, chuha cable, pipe se uljha
Tips: minimum level clear, cable free, junction par drip loop
Electrode
- Conductivity se level — mineral deposit — maintain
Software (current-based)
- Drive amp curve — galat pump model setting = nuisance trip
- Commissioned installer se set karwao
Wiring — yahan galti hoti hai
- Galat terminal — dry run vs remote start mix
- NC/NO ulta — hamesha trip ya kabhi nahi
- Motor cable ke saath unshielded lamba run — noise
- Junction mein pani — random fault
Safe checklist
- DC isolator off pehle
- Pehle photo wires ki
- Manufacturer colour diagram
- Crimp + heat shrink — nanga twist monsoon mein fail
- Label "dry run float"
Dealer ne float overhead tank par lagaya, aap seedha khet mein pump — bore level dikhega nahi. Sensor source par mangwao.
Troubleshooting — kisan-safe steps
- Fault code likho — photo dealer ko
- Dhoop — kuch drive low VDC par bhi "dry" dikhate — code alag pehchano
- Float haath se — display change?
- Bore par suno — cavitation = impeller par pani nahi
- Dopahar ek baar — low light undercurrent rule out
- Phir bhi → empanelled dealer + code photo
Har 5 minute restart mat karo — motor garam.
Controller kharab ya sensor?
| Symptom | Part |
|---|---|
| Float OK, phir trip | Drive board / parameter |
| Kabhi trip nahi, motor garam | Sensor dead / bypass |
| Sirf barish mein random | Geela junction |
| Sab LED off | DC fuse, lightning — warranty |
Lightning + weak earthing — khule khet mein common. SPD lagwana sasta hai doosri failure se.
PM-KUSUM warranty — expect kya
Empanelled vendor:
- Workmanship 1–2 saal
- OEM motor/drive card par years
- SLA tender mein — vary
Claim pack
- Sanction + beneficiary ID
- Motor, drive, panel serial
- Dated fault video
- Ticket number
15–30 din stall → nodal agency pressure. Subsidy OEM warranty replace nahi karti.
3HP/5HP/7HP cost, savings kyun kam.
Prevention calendar
| Kab | Kya |
|---|---|
| Pre-summer | Float test, foot valve |
| Monsoon | Junction seal |
| Harvest ke baad | Tractor cable check |
| Saal mein ek | Dealer inspection agar bundle |
PM-KUSUM guide, Component C grid.
HP size aur dry run sensitivity
| Pump size | Note |
|---|---|
| 3 HP chhota bore | Kam flow — current-based dry run jaldi trip kar sakta hai |
| 5 HP common PM-KUSUM | Float best — setting dealer se set karwao |
| 7 HP+ | Lambi pipe — prime time zyada; air lock common |
Galat HP controller mapping — 5 HP motor par 3 HP drive profile = false dry run. Commissioning report mein HP + setting photo save karo.
Monsoon mein dry run badh jata hai kyun?
- Junction box mein pani — short / noise trip
- Bore recharge slow — level actually neeche
- Lightning — drive fault code dry run jaisa dikhe
Barish season mein pehle box dry karo, phir float check — barish solar tips.
Spare float / sensor rakhna chahiye?
₹200–600 ka spare float season mein ek baar trip rok sakta hai jab dealer gaon mein 3 din baad aata hai. PM-KUSUM kit ke saath extra sensor nahi milta usually — market se same spec lo, photo bhej kar dealer confirm karwao pehle.
Controller board spare ghar par rare — warranty claim better. MC4 fuse aur DC isolator spare experienced users rakhte hain lightning belt mein.
Dealer se service visit par ye 5 cheez mangwao
- Fault history clear — code reset record
- Dry run sensitivity setting slip
- Insulation test motor cable (if trip repeat)
- Earthing resistance reading likhit
- Next visit date agar part order ho
Bina likhit service report ke nodal escalate weak rehta hai — photo + PDF save karo phone mein.
Bottom line
Controller fail aksar dry run sensor, float, wiring — motor nahi. Pani sach → float move → terminal. PM-KUSUM mein bypass mat — dealer warranty use karo.
Motor float se mehngi hai — bachao use.
Disclaimer: Shock risk. Manufacturer manual follow. Warranty OEM/state tender se alag. Ask Kisan certified electrician nahi.
Last verified: June 2026.
अक्सर पूछे जाने वाले प्रश्न
Solar pump par dry run protection kya hai?
Jab intake par pani na ho to pump band — motor dry chal kar jal na jaye. Controller (VFD/drive) float sensor, electrode ya current se trip karta hai. Bore mein pani level girne par bahut zaroori.
Pani hai phir bhi dry run error kyun?
Float atka, galat sensitivity, pipe mein air lock, foot valve mitti se band, wire loose, sensor upar reh gaya pani girne ke baad. Pehle asli pani level check — controller ko blame mat karo turant.
Float switch controller se kaise wire hota hai?
Manufacturer diagram follow — NC/NO dry-run terminals par. Screened cable agar likha ho, junction box dry, float free move kare. Galat terminal = false dry run.
Dry run bypass karke pump chala sakte hain?
Bypass se motor jal sakti hai, warranty khatam. Sensor hamesha bridge mat karo. PM-KUSUM empanelled install mein BIS ke hisaab se protection chahiye.
PM-KUSUM mein controller warranty kaise?
Installation certificate, sanction letter, serial, fault code photo rakho. Pehle empanelled dealer — drive OEM warranty (2–5 saal common). Dealer delay ho to nodal agency escalate, SLA proof ke saath.